lip GUIDED INSTRUCTION

Size: px
Start display at page:

Download "lip GUIDED INSTRUCTION"

Transcription

1 Lesson 24 lassification You will learn how organisms are placed into various groups based on similarities and differences shared among groups. You will also learn how to use guidelines to identify an organism. lassification key consists of a sequence of steps that are followed to identify an organism based on its observable features, such as structures and habitat. lip GUIE INSTRUTION IRETIONS Read the following information and answer the questions. The beginnings of taxonomy can be traced back to over 2000 years ago. At that time, Aristotle classified a living thing as either an animal or a plant. Aristotle's system was used for over 1600 years. Then in the 1700s, Swedish scientist arolus Linnaeus developed a new and more complex system. Not surprisingly, Linnaeus classified all living things mainly on the basis of their structure and shape. However, he greatly expanded the system used for classifying organisms. Linnaeus developed a seven-level classification system. Although it has been slightly modified, this system is still used today, Like Aristotle, Linnaeus classified living things as either animal or plant. Linnaeus used the term kingdom for his largest category. He then classified organisms into smaller and smaller categories. The smaller a category became, the more alike the organisms were. Linnaeus's seven-level classification system is shown in the illustration. Order Species Guided Questions What contribution did Linnaeus make to taxonomy? What are the seven levels of classification Linnaeus introduced? Now look at the table below to see how three different organisms a horseshoe crab, a blue crab, and a black widow spider fit into this classification system. lassification Level Horseshoe rab lue rab lack Widow Spider Kingdom Animalia Animalia Animalia Phylum Arthropoda Arthropoda Arthropoda lass Merostomata Malacostraca Arachinda Order Xiphosurida ecapoda Aranaea Family Limulidae Portunidae Theridiidae Genus Limulus allinectes Latrodectus Species Polyphemus Sapidus Mactans Peoples Education opying is illegal. hapter 3 iological Evolution and lassification 171

2 Lesson 24 lassification Notice that all three organisms belong to the same kingdom and phylum. All members of the phylum Arthropoda have a body that is divided into distinct parts called segments. Attached to these segments are appendages, such as legs or antennae. Arthropods also have a hard protective body covering, known as an exoskeleton or more commonly known as a shell. Guided Questions Identify three characteristics shared by all arthropods. Notice also that, although all three organisms are in the same kingdom and phylum, each is then placed in a different class. Interestingly, horseshoe crabs are the only arthropods in the class Merostomata. Organisms in this class are arthropods whose mouth is surrounded by legs. The term merostomata comes from Greek and means "legs attached to the mouth." Members of the class Malacostraca have legs attached to body segments but not their mouths. Members of the class Arachinda do not have antennae. onsequently, as you proceed through the seven-level classification system, the criteria used to classify organisms become more specific. Eventually, when the species level is reached, only a single type of organism remains. In effect, the classification levels become more exclusive in going from kingdom to species. Scientists use the genus and species names to identify an organism. This is known as binomial nomenclature. For example, scientists refer to a horseshoe crab as Limulus polyphemus and to a blue crab as allinectus sapidus. This avoids any possible confusion about the identity of an organism because the same animal can have several common names. An example is an animal that is known as a cougar, puma, mountain lion, mountain cat, catamount, or panther, depending on where it lives. No matter where a scientist lives, there is no confusion because the animal is known scientifically as Puma concolor. What does the term binomial nomenclature mean? The classification of the horseshoe crab, blue crab, and black widow spider can be misleading. All three organisms may seem to be equal in terms of their similarities. After all, they are all classified in the same kingdom and phylum and only begin to diverge at the class level. However, horseshoe crabs are more closely related to spiders than they are to blue crabs. lue crabs have antennae. In contrast, both horseshoe crabs and spiders do not have antennae. lue crabs also have gills. oth horseshoe crabs and spiders use a structure known as a book lung to obtain oxygen. Going through the seven levels of classification to identify an organism can be quite time consuming. This task can be even more difficult because scientists have added more levels to the classification systems. These additional levels include subphylum and subspecies. For example, the domesticated dog has the scientific name anis lupus familiaris to distinguish it from a closely related animal. This animal is the wolf, which has the scientific name anis lupus. In other words, domesticated dogs are classified as a subspecies of the genus that also includes the wolf. What two classification levels have been added since Linnaeus's time? 172 iology End-of-ourse opying is illegal. Measuring Up to the iology End-of-ourse el

3 lassification To help identify an organism more quickly, a classification key can be used. A classification key consists of a sequence of steps that is followed to identify an organism. Each step usually describes a structural feature, such as the presence or absence of wings. Many classification keys consist of steps that offer two choices. Such classification keys are called dichotomous keys. An example of a dichotomous key is shown below. This key can be used to help identify the type of tree found in Texas from which a leaf came. In some steps, this dichotomous key may identify three types of trees as a possible answer. A much more detailed dichotomous key would help identify the specific type of tree. Guided Questions What is a classification key? ichotomous key 1. a. Leaves are broad Go to Step 2 b. Leaves are needle-like Go to Step 3 2. a. Leaves and buds form opposite each other Maple, ash or dogwood tree b. Leaves and buds form an alternative arrangement Go to Step 5 3. a. Needles in clusters or bundles Pine tree b. Needles are individual Go to Step 4 4. a. Needles roll between fingers Spruce tree b. Needles do not roll between fingers Hemlock tree 5. a. Leaves are compound Walnut, sumac, or locust tree b. Leaves are simple Go to Step 6 6. a. Leaves have no lobes Go to Step 7 b. Leaves have lobes Go to Step 8 7. a. Leaves have smooth edges b. Leaves have rough edges 8. a. Leaves have round lobes b. Leaves have pointed lobes Willow oak, redbud, or magnolia tree irch, beech, or cherry tree White oak, mulberry, or sassafras tree Red oak, holly, or sycamore tree e Peoples Education opying is illegal. hapter 3 iological Evolution and lassification 173

4 Lesson 24 lassification 11lip SHORT-ANSWER QUESTIONS IRETIONS Answer the following questions. 1. How can two members of the same kingdom belong to different species, while two members of the same species must belong to the same kingdom? 2. What feature of organisms did Linnaeus use to develop his seven levels of classification? 3. Which classification level contains organisms that share more features order or family? Explain the reason for your choice. 4. Which two classification categories are used for the scientific name of an organism? 5. How does a classification key help identify an organism? 174 iology End-of-ourse opying is illegal. Measuring Up to the iology End-of-ourse Exam

5 lassification Lesson 24 Jr APPLY THE TEKS IRETIONS Read the paragraph, study the diagram, and answer the questions. Like a classification system, the military is organized into a hierarchical structure. For example, a soldier is the basic unit of the military. In turn, twelve soldiers make up a squad. Two or more squads make up a platoon. Two or more platoons make up a company. Two or more companies make up a battalion. Two or more battalions make up a regiment. Finally, two or more regiments make up a brigade. omplete the following table to show how both the classification system and the military consist of a hierarchical structure. Notice that the table contains one entry. iological Organization Military Organization Family Peoples Education opying is illegal. hapter 3 iological Evolution and lassification 175

6 Lesson 24 lassification STAAR PRATIE IRETIONS Read each question and choose the best answer. Then circle the letter for the correct answer. 1 Which classification level represents the least exclusive group of organisms? A lass Species Family Genus 2 What is the advantage of using an organism's scientific name rather than its common name? A The scientific name is always given in the native language. The scientific name is based upon the organism's kingdom and phylum. The scientific name does not depend on any classification system. The scientific name clearly identifies the organism. 3 A classification key can be considered a tool. What is the reason? A ' A classification key makes it easier to classify an organism. A classification key is used to unlock the criteria used for classifying organisms. A classification key makes it easier to identify an organism. A classification key is the reason why organisms are placed in the same classification level. 4 The Texas longhorn cattle have the scientific name os bos. What can you conclude from this fact? A The term longhorn cattle can also be considered its scientific name. The seven-level classification system does not apply to these cattle. The genus and species names are the same. Organisms with this scientific name are found only in Texas. 176 iology End-of-ourse opying is illegal. Measuring Up to the iology End-of-ourse Exam

7 lassification Lesson 24 41lip PRATIE: UMULATIVE IRETIONS Read each question and choose the best answer. Then circle the letter for the correct answer. The classification of life is not an easy task because of the wide diversity of organisms that are found on Earth. Which process was responsible for this wide diversity of life? A reeding strategies Natural selection Mitosis Gene flow 3 The classification system reveals the wide variety of life that exists. Each species of organisms has a unique set of features. Which of the following is responsible for creating the features that are used to classify organisms? A ell specialization Replication Taxonomy lassification keys The highest level of classification Linnaeus developed was the kingdom. Which of the following would represent an even higher level of classification? A Habitat Territory omain iome 4 The Texas longhorn cattle, os bos, evolved from an ancestor with the scientific name os primigenius. What can you conclude from this information? A They are members of different families They share their genus name. They share their species name. They belong to the same subspecies. Peoples Education opying is illegal. hapter 3 iological Evolution and lassification 177

Lesson 23 Taxonomy GUIDED INSTRUCTION DIRECTIONS. Guided Questions

Lesson 23 Taxonomy GUIDED INSTRUCTION DIRECTIONS. Guided Questions Lesson 23 Taxonomy You will learn how scientists have developed a branch of biology known as taxonomy, the goal of which is to organize the great diversity of life. You will also learn why this organization

More information

Biologists use a system of classification to organize information about the diversity of living things.

Biologists use a system of classification to organize information about the diversity of living things. Section 1: Biologists use a system of classification to organize information about the diversity of living things. K What I Know W What I Want to Find Out L What I Learned Essential Questions What are

More information

Biology Classification Unit 11. CLASSIFICATION: process of dividing organisms into groups with similar characteristics

Biology Classification Unit 11. CLASSIFICATION: process of dividing organisms into groups with similar characteristics Biology Classification Unit 11 11:1 Classification and Taxonomy CLASSIFICATION: process of dividing organisms into groups with similar characteristics TAXONOMY: the science of classifying living things

More information

Unit Two: Biodiversity. Chapter 4

Unit Two: Biodiversity. Chapter 4 Unit Two: Biodiversity Chapter 4 A. Classifying Living Things (Ch.4 - page 100) Scientific knowledge is constantly evolving ( changing ): new evidence is discovered laws and theories are tested and possibly

More information

Carolus Linnaeus System for Classifying Organisms. Unit 3 Lesson 2

Carolus Linnaeus System for Classifying Organisms. Unit 3 Lesson 2 Carolus Linnaeus System for Classifying Organisms Unit 3 Lesson 2 Students will be able to: Conclude some of the classification benefits and importance. Define what is meant by species. Describe the binomial

More information

Finding Order in Diversity

Finding Order in Diversity Lesson Overview 18.1 Scientists have been trying to identify, name, and find order in the diversity of life for a long time. The first scientific system for naming and grouping organisms was set up long

More information

CLASSIFICATION. Finding Order in Diversity

CLASSIFICATION. Finding Order in Diversity CLASSIFICATION Finding Order in Diversity WHAT IS TAXONOMY? Discipline of classifying organisms and assigning each organism a universally accepted name. WHY CLASSIFY? To study the diversity of life, biologists

More information

Thursday, February 28. Bell Work: On the picture.

Thursday, February 28. Bell Work: On the picture. Thursday, February 28 Bell Work: On the picture. 1 Classification Chapter 17 This is a pangolin. Though it may not look like any other animal that you are familiar with, it is a mammal the same group of

More information

Biology. 1. a) leaves are needle like.. White pine (Pinus) b) leaves are broad. Go to statement 2

Biology. 1. a) leaves are needle like.. White pine (Pinus) b) leaves are broad. Go to statement 2 Biology DICHOTOMOUS KEYING Name Period: 1 Date : Identify the names of the plants using the dichotomous keys: 1. a) leaves are needle like.. White pine (Pinus) b) leaves are broad. Go to statement 2 2.

More information

First things first: What IS classification and WHY do we do it (or DO we)? How are living things classified? Classification Systems

First things first: What IS classification and WHY do we do it (or DO we)? How are living things classified? Classification Systems How are living things classified? Objective: Describe the system used today to classify organisms (including the seven levels of classification as well as scientific names) First things first: What IS

More information

CLASSIFICATION OF LIVING THINGS

CLASSIFICATION OF LIVING THINGS CLASSIFICATION OF LIVING THINGS 1. Taxonomy The branch of biology that deals with the classification of living organisms About 1.8 million species of plants and animals have been identified. Some scientists

More information

Using a Dichotomous Key

Using a Dichotomous Key Using a Dichotomous Key Created by Tricia Stohr-Hunt, 2013 http://bookishways.blogspot.com http://www.scrappindoodles.com Font by Ashley Magee http://www.firstgradebrain.com/ This file contains: 1. Reading

More information

Adv. Biology: Classification Unit Study Guide

Adv. Biology: Classification Unit Study Guide Adv. Biology: Classification Unit Study Guide Chapter 17 and 24.1-24.2 All notes/handouts/activities from class Early taxonomists: Aristotle/Linnaeus o Aristotle (394-32 B.C.) a Greek Philosopher, who

More information

The Road to the Six Kingdoms

The Road to the Six Kingdoms Bio 2201 Unit 2 The Road to the Six Kingdoms A 2011study estimated there are about 8.6 million species on earth. Only 1.8 million species have been identified and named. *Chromista is a sub-kingdom group

More information

Finding Order in Diversity

Finding Order in Diversity Finding Order in Diversity Key Questions What are the goals of binomial nomenclature and systematics? How did Linnaeus group species into larger taxa? Vocabulary binomial nomenclature genus systematics

More information

Chapter 18: Classification Structured Notes

Chapter 18: Classification Structured Notes Chapter 18: Classification Structured Notes Why Classify? 1) ) Taxon = Taxonomy = Field of biology that deals with classifying and naming organisms Taxonomist = is a scientists who determines relationships

More information

18-1 Finding Order in Diversity Slide 2 of 26

18-1 Finding Order in Diversity Slide 2 of 26 18-1 Finding Order in Diversity 2 of 26 Natural selection and other processes have led to a staggering diversity of organisms. Biologists have identified and named about 1.5 million species so far. They

More information

The Key to Identification Lexile 860L

The Key to Identification Lexile 860L 7.11: Identification of Organisms The Key to Identification Lexile 860L 1 What s in a name? What does your name say about you? o you have a nickname? o you share the same name as a family member or friend?

More information

Sorting It All Out CLASSIFICATION OF ORGANISMS

Sorting It All Out CLASSIFICATION OF ORGANISMS Sorting It All Out CLASSIFICATION OF ORGANISMS 1 WHAT DO I NEED TO LEARN FROM THIS UNIT? Classify organisms into the currently recognized kingdoms according to characteristics that they share. Be familiar

More information

Vocabulary Classification the process of arranging organisms into groups based on similarities Taxonomy the science of naming and classifying

Vocabulary Classification the process of arranging organisms into groups based on similarities Taxonomy the science of naming and classifying Classification.. Vocabulary Classification the process of arranging organisms into groups based on similarities Taxonomy the science of naming and classifying organisms trait a characteristic or behavior

More information

What is classification? Basically classification is a fancy word for organization.

What is classification? Basically classification is a fancy word for organization. Classification What is classification? Basically classification is a fancy word for organization. Some Scientists believe there are as many as 200 million different kinds of living things on our planet.

More information

9.3 Classification. Lesson Objectives. Vocabulary. Introduction. Linnaean Classification

9.3 Classification. Lesson Objectives. Vocabulary. Introduction. Linnaean Classification 9.3 Classification Lesson Objectives Outline the Linnaean classification, and define binomial nomenclature. Describe phylogenetic classification, and explain how it differs from Linnaean classification.

More information

Autotrophs capture the light energy from sunlight and convert it to chemical energy they use for food.

Autotrophs capture the light energy from sunlight and convert it to chemical energy they use for food. Prokaryotic Cell Eukaryotic Cell Autotrophs capture the light energy from sunlight and convert it to chemical energy they use for food. Heterotrophs must get energy by eating autotrophs or other heterotrophs.

More information

Classification of Living Things

Classification of Living Things Classification of Living Things What is classification? Classification: putting things into orderly groups based on similar characteristics. Ways we classify things Supermarket aisles Libraries Classes

More information

How are living things classified?

How are living things classified? Classification Systems How are living things classified?! Learning Goals 12, 13, 14, 15 & 16 on your rubric! TAXONOMY: The study of classification, or how living things are grouped! Aristotle classified

More information

Classification Cladistics & The Three Domains of Life. Biology Mrs. Flannery

Classification Cladistics & The Three Domains of Life. Biology Mrs. Flannery Classification Cladistics & The Three Domains of Life Biology Mrs. Flannery Finding Order in Diversity Earth is over 4.5 billion years old. Life on Earth appeared approximately 3.5 billion years ago and

More information

CLASSIFICATION. Similarities and Differences

CLASSIFICATION. Similarities and Differences CLASSIFICATION Similarities and Differences TEKS 8A: Students will define taxonomy and recognize the importance of a standard system to the scientific community 8B: Students will categorize organisms using

More information

Concept Modern Taxonomy reflects evolutionary history.

Concept Modern Taxonomy reflects evolutionary history. Concept 15.4 Modern Taxonomy reflects evolutionary history. What is Taxonomy: identification, naming, and classification of species. Common Names: can cause confusion - May refer to several species (ex.

More information

Chapter 17. Organizing Life's Diversity

Chapter 17. Organizing Life's Diversity Chapter 17 Organizing Life's Diversity Key Concepts: Chapter 17 1. List the six kingdoms. 2. Our current system of classification was originally based on structures; scientists now base classification

More information

Station 1. Explain how scientists use each item below to determine the evolutionary relationships among organisms. 1. Structural similarities:

Station 1. Explain how scientists use each item below to determine the evolutionary relationships among organisms. 1. Structural similarities: Station 1 Explain how scientists use each item below to determine the evolutionary relationships among organisms. 1. Structural similarities: 2. Breeding behavior: 3. Geographical distribution: 4. Chromosome

More information

Classifying and Exploring Life

Classifying and Exploring Life Classifying and Exploring Life Classifying Organisms Key Concepts What methods are used to classify living things into groups? Why does every species have a scientific name? What do you think? Read the

More information

CLASSIFICATION NOTES

CLASSIFICATION NOTES CLASSIFICATION NOTES Classification Classification = arrangement of living things into groups according to their observed similarities. Important because it allows us to be able to study life easier Living

More information

Classification Notes

Classification Notes Name Living Environment Classification Notes Characteristics of Living Things All living things have a cellular organization, contain similar chemicals, use energy, grow and develop, respond to their surroundings,

More information

Objectives. Classification. Activity. Scientists classify millions of species

Objectives. Classification. Activity. Scientists classify millions of species Objectives Classification Notes 8.1 Summarize classification Describe the evidence used to classify organisms. List the seven levels of classification. Describe and list the six kingdoms of living organisms

More information

Yesterday, we explored various pieces of lab equipment. In the activity, each group was asked to sort the equipment into groups. How did you decide

Yesterday, we explored various pieces of lab equipment. In the activity, each group was asked to sort the equipment into groups. How did you decide Yesterday, we explored various pieces of lab equipment. In the activity, each group was asked to sort the equipment into groups. How did you decide where each piece of equipment belongs? In a similar manner,

More information

The trees in my neighbourhood

The trees in my neighbourhood The trees in my neighbourhood Module 1 I identify the trees around me Summary of Module 1 Students learn to use a tree identification key through several activities that can be carried out in the schoolyard

More information

Vocabulary: Fill in the definition for each word. Use your book and/or class notes. You can put the words in your own words. Animalia: Archaea:

Vocabulary: Fill in the definition for each word. Use your book and/or class notes. You can put the words in your own words. Animalia: Archaea: Name: _ Due Date: _ Per: _ Unit 4.2 Study Guide Directions: Complete all sections to the best of your ability. On the day of the Quiz (the due date for this assignment) turn this in with all of your Unit

More information

Classification. Sorting It All Out. section 1. Chapter 9

Classification. Sorting It All Out. section 1. Chapter 9 Classification Chapter 9 Sorting It All Out section 1 1 Why Classify? Classification Is the division of organisms into groups or classes based on common characteristics For thousands of years, humans have

More information

Classification of Living Things. Unit II pp 98

Classification of Living Things. Unit II pp 98 Classification of Living Things Unit II pp 98 Why There is a Need for Classifying There are over 2 million different types of organisms known. biologists can organize living things into groups. Taxonomy

More information

Taxonomy. Taxonomy is the science of classifying organisms. It has two main purposes: to identify organisms to represent relationships among organisms

Taxonomy. Taxonomy is the science of classifying organisms. It has two main purposes: to identify organisms to represent relationships among organisms Taxonomy Taxonomy Taxonomy is the science of classifying organisms. It has two main purposes: to identify organisms to represent relationships among organisms Binomial Nomenclature Our present biological

More information

Phylogeny 9/8/2014. Evolutionary Relationships. Data Supporting Phylogeny. Chapter 26

Phylogeny 9/8/2014. Evolutionary Relationships. Data Supporting Phylogeny. Chapter 26 Phylogeny Chapter 26 Taxonomy Taxonomy: ordered division of organisms into categories based on a set of characteristics used to assess similarities and differences Carolus Linnaeus developed binomial nomenclature,

More information

Chapter 17A. Table of Contents. Section 1 Categories of Biological Classification. Section 2 How Biologists Classify Organisms

Chapter 17A. Table of Contents. Section 1 Categories of Biological Classification. Section 2 How Biologists Classify Organisms Classification of Organisms Table of Contents Section 1 Categories of Biological Classification Section 1 Categories of Biological Classification Classification Section 1 Categories of Biological Classification

More information

The Tree of Life. Chapter 17

The Tree of Life. Chapter 17 The Tree of Life Chapter 17 1 17.1 Taxonomy The science of naming and classifying organisms 2000 years ago Aristotle Grouped plants and animals Based on structural similarities Greeks and Romans included

More information

What is taxonomy? Taxonomy is the grouping and naming of organisms. Biologists who study this are called taxonomists

What is taxonomy? Taxonomy is the grouping and naming of organisms. Biologists who study this are called taxonomists Taxonomy What is taxonomy? Taxonomy is the grouping and naming of organisms Biologists who study this are called taxonomists How did it start? People wanted to organize their world so they began grouping,

More information

OBJECTIVE 2: USE AND DEVELOP A SIMPLE CLASSIFICATION SYSTEM

OBJECTIVE 2: USE AND DEVELOP A SIMPLE CLASSIFICATION SYSTEM Terms to Know o Archaea o bacteria o binomialnomenclature o classify o domain o Eukarya o genus o species o taxonomy OBJECTIVE 2: USE AND DEVELOP A SIMPLE CLASSIFICATION SYSTEM Lesson Objectives Explain

More information

Unit 2 Biodiversity Ch. 4 Patterns of Life

Unit 2 Biodiversity Ch. 4 Patterns of Life Unit 2 Biodiversity Ch. 4 Patterns of Life Name: 4.1 Characteristics of Life In order to be considered living, an organism must possess the following Six (6) characteristics: 1. Living things are organized

More information

Scientist Guide. The Key to Leaf Identification. Introduction. Activity Overview. Materials. Safety Precautions. Procedure

Scientist Guide. The Key to Leaf Identification. Introduction. Activity Overview. Materials. Safety Precautions. Procedure Scientist Guide The Key to Leaf Identification Introduction Classification is an important and specific way of organizing information so that it can be used to understand the natural world. There are almost

More information

Kingdom: What s missing? List the organisms now missing from the above list..

Kingdom: What s missing? List the organisms now missing from the above list.. Life Science 7 Chapter 9-1 p 222-227 Classification: Sorting It All Out Objectives Explain why and how organisms are classified. List the eight levels of classification. Explain scientific names. Describe

More information

Characteristics of Life

Characteristics of Life UNIT 2 BIODIVERSITY Chapter 4- Patterns of Life Biology 2201 Characteristics of Life All living things share some basic characteristics: 1) living things are organized systems made up of one or more cells

More information

Text Rendering Activity

Text Rendering Activity Text Rendering Activity Name Period Date Directions: The following is a nonfiction article that was written to provide you with information on how living organisms are classified and named. As you read:

More information

Classification Systems. - Taxonomy

Classification Systems. - Taxonomy Classification Systems - Taxonomy Why Classify? 2.5 million kinds of organisms Not complete- 20 million organisms estimated Must divide into manageable groups To work with the diversity of life we need

More information

Organizing Life on Earth

Organizing Life on Earth Organizing Life on Earth Inquire: Organizing Life on Earth Overview Scientists continually obtain new information that helps to understand the evolutionary history of life on Earth. Each group of organisms

More information

Classification. 18a. Lab Exercise. Contents. Introduction. Objectives. 18a

Classification. 18a. Lab Exercise. Contents. Introduction. Objectives. 18a Lab Exercise Classification Contents Objectives 1 Introduction 1 Activity.1 Classification of Organisms 4 Activity.2 Phylogenetic Analysis 5 Resutls Section 7 Objectives - To create a classification of

More information

BIOLOGY UNIT 4 COMMON ASSESSMENT

BIOLOGY UNIT 4 COMMON ASSESSMENT 1. Scientists used to group fungi with plants. Which of the following is a major factor that determines why fungi are not classified as part of the plant kingdom? A. Fungi do not have chitin B. Fungi grow

More information

Section 18-1 Finding Order in Diversity

Section 18-1 Finding Order in Diversity Name Class Date Section 18-1 Finding Order in Diversity (pages 447-450) Key Concepts How are living things organized for study? What is binomial nomenclature? What is Linnaeus s system of classification?

More information

What is classification?

What is classification? Classification Table of Contents Objectives Explain why and how organisms are classified. List the eight levels of classification. Explain scientific names. Describe how dichotomous keys help in identifying

More information

Classification of Organisms

Classification of Organisms Classification of Organisms Main Idea *****Chapter 14***** Students should be able to: * Understand why a classification system is important * Understand that there are a variety of ways to classify organisms

More information

Lecture 11: Why are arthropods successful?

Lecture 11: Why are arthropods successful? Lecture 11: Why are arthropods successful? Goals: 1. Define success 2. Compare insects to other living organisms, understand what insect adaptations have contributed to their success 3. Relate methods

More information

Evolution and Biodiversity 5.3- Classification and Biodiversity

Evolution and Biodiversity 5.3- Classification and Biodiversity Essential idea: Species are named and classified using an internationally agreed system. Evolution and Biodiversity 5.3- Classification and Biodiversity Nature of science: Cooperation and collaboration

More information

Friday April 8 th 2016

Friday April 8 th 2016 Friday April 8 th 2016 Warm-Up Select a highlighter. Get a bottle of glue. Update your Table of Contents (see whiteboard). Today In Science Classification Presentation and Notes How many different types

More information

Classification Highlight Packet

Classification Highlight Packet Name: Period: Date: 1. Which kingdom is NOT prokaryotic? A. Eubacteria B. Archaeabacteria C. Protists 2. Which kingdom contains "extremophiles"? A. eubacteria B. archaebacteria C. fungi 3. Which example

More information

Evolution Evidence of Change

Evolution Evidence of Change 6 Evolution Evidence of Change lesson 3 Evolution and Plate Tectonics Grade Seven Science Content Standard. 4.f. Students know how movements of Earth's continental and oceanic plates through time, with

More information

Ch 9 Section 1: Classification: Sorting It All Out

Ch 9 Section 1: Classification: Sorting It All Out Ch 9 Section 1: Classification: Sorting It All Out Objectives: Explain why and how organisms are classified. List the eight levels of classification. Explain scientific names. Describe how dichotomous

More information

Classification Practice Test

Classification Practice Test Classification Practice Test Modified True/False Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. 1. An organism may have different

More information

Chapter 26. Phylogeny and the Tree of Life. Lecture Presentations by Nicole Tunbridge and Kathleen Fitzpatrick Pearson Education, Inc.

Chapter 26. Phylogeny and the Tree of Life. Lecture Presentations by Nicole Tunbridge and Kathleen Fitzpatrick Pearson Education, Inc. Chapter 26 Phylogeny and the Tree of Life Lecture Presentations by Nicole Tunbridge and Kathleen Fitzpatrick Investigating the Tree of Life Phylogeny is the evolutionary history of a species or group of

More information

Finding Order in Diversity

Finding Order in Diversity Finding Order in Diversity Videos Scishow Taxonomy: https://youtu.be/f38bmgpcz_i Bozeman Taxonomy: https://youtu.be/tyl_8gv7rie Terms to Know 1. Radiometric Dating 12. Miller and Urey s 2. Geologic Time

More information

Chapter 18: Classification

Chapter 18: Classification Chapter 18: Classification Dichotomous Key A way to identify unknown organisms Contains major characteristics of groups of organisms Pairs of CONTRASTING descriptions 4. After each description key either

More information

Sorting It All Out. What You Will Learn Explain why and how organisms are classified. List the eight levels of classification.

Sorting It All Out. What You Will Learn Explain why and how organisms are classified. List the eight levels of classification. Sorting It All Out Imagine that you live in a tropical rain forest and must get your own food, shelter, and clothing from the forest. What do you need to know to survive in the forest? What You Will Learn

More information

CHAPTER 4 EXAM. 3. Which is the broadest classification level? a. family b. kingdom c. phylum d. species

CHAPTER 4 EXAM. 3. Which is the broadest classification level? a. family b. kingdom c. phylum d. species CHAPTER 4 EXAM 1. What is binomial nomenclature? a. Classifying organisms into seven levels b. The naming system developed by Aristotle c. Grouping animals based on how they move d. A naming system in

More information

Biology 2201 Unit Test Holy Spirit High Mr. Pretty Name: ANSWER KEY

Biology 2201 Unit Test Holy Spirit High Mr. Pretty Name: ANSWER KEY Biology 2201 Unit Test Holy Spirit High Mr. Pretty Name: ANSWER KEY 1.) Which of the following increases as you proceed down classification levels from kingdom to species? A) Activity B) Diversity among

More information

The Living Environment Unit 4 History of Biological Diversity Unit 17: Organizing the Diversity of Life-class key.

The Living Environment Unit 4 History of Biological Diversity Unit 17: Organizing the Diversity of Life-class key. Name: Period: Chapter 17 assignments Pages/Sections Date Assigned Date Due Topic: The Tree of Life Objective: How may we organize so many different organisms? The Tree of Life o organize organisms by structure

More information

Dichotomous Key Biology Lab

Dichotomous Key Biology Lab Dichotomous Key Biology Lab Over 60,000 different tree species exist in out world. Identifying one species from another is as easy as answering a list of yes/no questions, called a dichotomous key. Answering

More information

UNIT 4 TAXONOMY AND CLASSIFICATION

UNIT 4 TAXONOMY AND CLASSIFICATION UNIT 4 TAXONOMY AND CLASSIFICATION CHAPTER 13 IN TEXT READ P. 4.0 CLASSIFICATION AND TAXONOMY 4.1 Define taxonomy 4.2 Discuss the reasons for classifying organisms 4.3 Define species and binomial nomenclature

More information

Tree morphology and identification. TreeKeepers March 18, 2017

Tree morphology and identification. TreeKeepers March 18, 2017 Tree morphology and identification TreeKeepers March 18, 2017 Tree identification keys What if you don t know what kind of tree it is? Dichotomous keys work you through it. Ask a series of yes or no questions

More information

Unit 9: Taxonomy (Classification) Notes

Unit 9: Taxonomy (Classification) Notes Name Exam Date Class Unit 9: Taxonomy (Classification) Notes What is Classification? is when we place organisms into based on their. Classification is also known as. Taxonomists are scientists that & organisms

More information

Taxonomy. The science of naming organisms.

Taxonomy. The science of naming organisms. Taxonomy The science of naming organisms. Why Classify? Aristotle Did It Plant or animal? If an animal, does it Fly Swim Crawl Simple classifications Used common names Carolus Linnaeus did it better

More information

Zoology. Classification

Zoology. Classification Zoology Zoology involves studying all aspects of organisms belonging to the animal kingdom taxonomy, animal physiology, comparative anatomy, and ecology. Our study of Zoology will be focused on the different

More information

Tree Identification Summer Phase. Learning to identify trees by looking at their leaves.

Tree Identification Summer Phase. Learning to identify trees by looking at their leaves. Tree Identification Summer Phase Learning to identify trees by looking at their leaves. Poison Ivy Alert Climbs trees and grows along the ground. Three leaf clusters. Leaves are shiny green and 3 to 5

More information

Seeing the Trees of the Forest

Seeing the Trees of the Forest Seeing the Trees of the Forest Essential Questions What trees are common in Pennsylvania? How can these trees be identified? How do trees grow and reproduce? Name Period Types of Leaf Arrangement Simple

More information

SAMPLE. Guided Instruction

SAMPLE. Guided Instruction DIRECTIONS You will learn that scientists have established a fossil record that reveals that evolution can proceed slowly with gradual changes or in spurts with sudden changes. You will also learn that

More information

What is the purpose of the Classifying System? To allow the accurate identification of a particular organism

What is the purpose of the Classifying System? To allow the accurate identification of a particular organism What is the purpose of the Classifying System? To allow the accurate identification of a particular organism Taxonomy The practice of classifying organisms -Taxonomy was founded nearly 300 years ago by

More information

How are living things classified?

How are living things classified? 31 species: group of organisms that look alike and can reproduce among themselves Simple Organisms genus: classification group made up of related species kingdom: largest classification group phylum: classification

More information

Finding Order in Diversity

Finding Order in Diversity 18.1 Finding order in diversity Binomial Nomenclature In the 1730s, Swedish botanist Carolus Linnaeus developed a two-word naming system called binomial nomenclature. In deciding how to place organisms

More information

Multiple Choice Write the letter on the line provided that best answers the question or completes the statement.

Multiple Choice Write the letter on the line provided that best answers the question or completes the statement. Chapter 18 Classification Chapter Test A Multiple Choice Write the letter on the line provided that best answers the question or completes the statement. 1. Scientists assign each kind of organism a universally

More information

Mr. Blacher's 7th Grade Biology

Mr. Blacher's 7th Grade Biology Classification There are around 2 million species that have been described and scientists believe there are anywhere from 4 million to over 100 million different kinds of life forms on this planet. How

More information

CH. 18 Classification

CH. 18 Classification CH. 18 Classification Name:_ 1. Biologists use a classification system to group organisms in part because organisms a. are going extinct. b. are very numerous and diverse. c. are too much alike. d. share

More information

What are living things, and how can they be classified?

What are living things, and how can they be classified? Classifying Organisms What are living things, and how can they be classified? binomial nomenclature species genus dichotomous key cladogram Classifying Living Things Classification: organizing information

More information

Classification and Viruses Practice Test

Classification and Viruses Practice Test Classification and Viruses Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Biologists use a classification system to group organisms in part

More information

The Tree of Life. Phylogeny

The Tree of Life. Phylogeny The Tree of Life Phylogeny Phylogenetics Phylogenetic trees illustrate the evolutionary relationships among groups of organisms, or among a family of related nucleic acid or protein sequences Each branch

More information

The Classification of Plants and Other Organisms. Chapter 18

The Classification of Plants and Other Organisms. Chapter 18 The Classification of Plants and Other Organisms Chapter 18 LEARNING OBJECTIVE 1 Define taxonomy Explain why the assignment of a scientific name to each species is important for biologists KEY TERMS TAXONOMY

More information

9/19/2012. Chapter 17 Organizing Life s Diversity. Early Systems of Classification

9/19/2012. Chapter 17 Organizing Life s Diversity. Early Systems of Classification Section 1: The History of Classification Section 2: Modern Classification Section 3: Domains and Kingdoms Click on a lesson name to select. Early Systems of Classification Biologists use a system of classification

More information

The practice of naming and classifying organisms is called taxonomy.

The practice of naming and classifying organisms is called taxonomy. Chapter 18 Key Idea: Biologists use taxonomic systems to organize their knowledge of organisms. These systems attempt to provide consistent ways to name and categorize organisms. The practice of naming

More information

FCAT Review. Evolution & Ecosystems

FCAT Review. Evolution & Ecosystems FCAT Review Evolution & Ecosystems Classifying Organisms Why would we classify organisms? To make them easier to study The science of studying how organisms are classified is called taxonomy Organisms

More information

Characteristics and classification of living organisms

Characteristics and classification of living organisms Unit 1 Characteristics and classification of living organisms Welcome to the exciting and amazing world of living things. Go outside and look around you. Look at the sky, the soil, trees, plants, people

More information

Name: Class: Date: ID: A

Name: Class: Date: ID: A Class: _ Date: _ Ch 17 Practice test 1. A segment of DNA that stores genetic information is called a(n) a. amino acid. b. gene. c. protein. d. intron. 2. In which of the following processes does change

More information

Why do we classify things? Supermarket aisles Libraries Classes Teams/sports Members of a family Roads Cities Money

Why do we classify things? Supermarket aisles Libraries Classes Teams/sports Members of a family Roads Cities Money Classification 1 2 I. Diversity of Life A) 13 billion known species of organisms B) This is only 5% of all organisms that ever lived!!!!! C) New organisms are still being found and identified Why do we

More information

LS CH 7 practice. Multiple Choice Identify the choice that best completes the statement or answers the question.

LS CH 7 practice. Multiple Choice Identify the choice that best completes the statement or answers the question. LS CH 7 practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following is NOT a characteristic that all living things share? a. a cellular

More information

NAME: DATE: PER: CLASSIFICATION OF LIFE Powerpoint Notes

NAME: DATE: PER: CLASSIFICATION OF LIFE Powerpoint Notes NAME: DATE: PER: CLASSIFICATION OF LIFE Powerpoint Notes 1. Species of Organisms a) There are known species of organisms b) This is only of all organisms that ever lived. c) are still being found and identified.

More information

Learning Outcome B1 13/10/2012. Student Achievement Indicators. Taxonomy: Scientific Classification. Student Achievement Indicators

Learning Outcome B1 13/10/2012. Student Achievement Indicators. Taxonomy: Scientific Classification. Student Achievement Indicators Classification of Living Organisms Learning Outcome B1 Learning Outcome B1 Apply the Kingdom System of classification to study the diversity of organisms. Student Achievement Indicators Students who have

More information

Leaf Identification Kit

Leaf Identification Kit Introduction Leaf Identification Kit Catalog No. FB0490 Publication No. 10673 Leaves can be found in a wide variety of sizes, shapes and colors. Each species of tree produces its own variation of leaf.

More information