An Introduction to the Invertebrates, Part One Phyla Placozoa, Porifera, Cnidaria, Ctenophora. Reference: Chapter 33.1, 33.2

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "An Introduction to the Invertebrates, Part One Phyla Placozoa, Porifera, Cnidaria, Ctenophora. Reference: Chapter 33.1, 33.2"

Transcription

1 An Introduction to the Invertebrates, Part One Phyla Placozoa, Porifera, Cnidaria, Ctenophora Reference: Chapter 33.1, 33.2

2 Overview: Life Without a Backbone v Invertebrates are animals that lack a backbone 95% of known animal species Morphologically very diverse

3 How are invertebrates related to protists?

4 Colonial Choanoflagellate Protists Is this our Great Grandpappy?

5 Metazoa vs. Eumetazoa v Kingdom Animalia = Metazoa (animals) Eukaryotic, multicellular, heterotrophs No cell walls Motile at some point in life history v Eumetazoa ( true animals) In addition to metazoan characteristics, this group has: True tissues organized into germ layers Neurons An embryo that goes through a gastrula stage

6 The Basal Metazoans Phyla Placozoa and Porifera v The basal animals lack true tissues and organs Phylum Placozoa one species (relation to other basal groups not clear) Phylum Porifera (sponges) 5500 species v Resemble choanoflagellate protists

7 Phylum Placozoa v Only one formally recognized species, Trichoplax adhaerens Most simply organized metazoan known v Three-layered sandwich organization Upper (protective) and lower (nutritive) monociliated epithelia Middle layer a meshwork of connected fiber cells v Global distribution- crawls along rocks, corals, etc. v Avoids predation by using chemical defenses

8 Phylum Porifera ( sponges ) v Sessile animals with simple body plan, but diverse shapes and colors v Live in marine waters (most species) or fresh water

9 Sponges consist of three layers 1. Outer epidermis 2. Mesohyl is the middle, gelatinous noncellular layer Mobile amoebocytes play roles in digestion and structure Spicules are skeletal fiber structures of calcium carbonate or silica 3. Choanocytes are flagellated collar cells making up the inner lining 1. Generate a water current through the sponge and ingest suspended food

10 Sponges are suspension feeders v Capture food particles suspended in the water that passes through their body Water is drawn through pores into a cavity called the spongocoel and out through an opening called the osculum Choanocytes trap food in collar and ingest it by phagocytosis Food particles may be transferred to amoebocytes (named for their use of pseudopodia)

11 Most Sponges are hermaphrodites v Each individual sponge functions as both male and female Most are sequential hermaphroditesfunction first as one sex, then the other Gametes arise from either choanocytes or amoebocytes Eggs stay within the mesohyl but sperm disperse on the water current Zygotes disperse as flagellated larvae before settling v Sponges are harvested for their bodies, composed of spicules

12 Sponges create current to aid feeding & reproduction Sponge-dye experiment (~5-min video):

13 The Eumetazoan Diploblasts: Phyla Cnidaria & Ctenophora v Eumetazoan = true tissues v Diploblasts Two primary germ layers Endoderm and ectoderm Radial symmetry

14 Phylum Cnidaria v Cnidarians have diversified into a wide range of both sessile and motile forms including jellies, corals, and hydras v The basic body plan of a cnidarian is a sac with a central digestive compartment, the gastrovascular cavity v A single opening functions as mouth and anus

15 Cnidarian Body Plan v Depending on species, there are two variations on the body plan: the sessile polyp and motile medusa Polyp: adheres to the substrate by the aboral end of its body (the end opposite the mouth) Medusa: bell-shaped body with the mouth/anus on the underside v Example of polymorphism the presence of more than one morphological type in a taxon

16 Cnidarian are carnivores v Use tentacles to capture prey v Tentacles are armed with cnidocytes Specialized cells for defense and capture of prey Contain Nematocysts Specialized organelles within cnidocytes that eject a stinging thread

17 Nematocysts in action Excerpt from video, ~1:08-3:50

18 Cnidarian Tissues v No brain or nervous system but do have a nerve net v No true muscles (diploblastic!) Instead, epitheliomuscular cells control locomotion

19 Phylum Cnidaria is divided into four major classes 1. Hydrozoa- alternate between polyp and medusa 2. Scyphozoa- true jellies 3. Cubozoa- box jellies 4. Anthozoa- anemones and corals

20 Phylum Cnidaria: Class Hydrozoa v Most alternate between polyp and medusa forms v Hydra, a freshwater cnidarian, exists only in polyp form and reproduces asexually by budding

21 Life cycle of Hydrozoan Obelia - MEMORIZE IT! Feeding polyp Reproductive polyp Portion of a colony of polyps Medusa bud ASEXUAL REPRODUCTION (BUDDING) Developing polyp Medusa Gonad MEIOSIS Egg SEXUAL REPRODUCTION Planula (larva) Sperm FERTILIZATION Zygote 1 mm Mature polyp Key Haploid (n) Diploid (2n)

22 Phylum Cnidaria: Unusual Hydrozoan v The Portuguese Man of War Often mistaken for true jellyfish (scyphozoa) Has no polyp form Severe sting can cause major harm Preyed upon by Glaucus, a nudibranch (mollusc) Incorporates the nematocysts into its own body for defense

23 Phylum Cnidaria: Class Scyphozoa v In the class Scyphozoa, jellies (medusae) are the dominant form of the life cycle

24 Phylum Cnidaria: Class Cubozoa v In the class Cubozoa, which includes box jellies and sea wasps, the medusa is box-shaped and has complex eyes v Cubozoans often have highly toxic cnidocytes- painful and possibly lethal v Most common in tropical Indo-Pacific

25 Phylum Cnidaria: Class Anthozoa v Flower animals v Include the corals and sea anemones v Occur only as polyps v Hard corals secrete a calcareous exoskeleton; soft corals do not

26 Phylum Cnidaria: Class Anthozoa James Nicholson, Olympus BioScapes v Many corals form obligate symbioses with algae Polyp tissue (green) around mouth and base of the tentacles Symbiotic zooxanthellae (red fluorescence from chlorophyll) in tissue between polyps

27 Phylum Ctenophora v Comb jellies 8 comb-like rows of cilia used for locomotion One group has tentacles; another does not Swim mouth first, unlike cnidarian medusa No polyp morph v Predators No cnidocytes; instead have colloblasts arrayed along tentacles that produce sticky substance to trap prey v Many capable of bioluminescence

28 Ctenophore gallery

29

Sponge and Cnidarian Review

Sponge and Cnidarian Review Name Period Date Sponge and Cnidarian Review Matching On the lines provided, write the letter of the definition that matches each term. 1. Invertebrate 2. Filter feeder 3. Asymmetry 4. Radial 5. Medusa

More information

What is a Cnidarian?

What is a Cnidarian? Invertebrate What is a Cnidarian? 9000 species of jellyfishes, corals, sea anemones, hydras Mostly marine animals Radially symmetrical One body opening Two layers of cells organized into tissues with specific

More information

Intro to Animals. Chapter 32

Intro to Animals. Chapter 32 Intro to Animals Chapter 32 1) Multicellular Organization (Different cells have different functions) Specialization: adaptation of a cell for a particular function Remember: cells tissues organs organ

More information

Chapter 7. Marine Animals Without a Backbone

Chapter 7. Marine Animals Without a Backbone Chapter 7 Marine Animals Without a Backbone General Characteristics of Animals Multicellular, diploid organisms with tissues, organs or organ systems in most Heterotrophic Require oxygen for aerobic

More information

09/12/2012. Classification. Characteristics. Learning Outcome G2. Student Achievement Indicators. Phylum Porifera The Sponges

09/12/2012. Classification. Characteristics. Learning Outcome G2. Student Achievement Indicators. Phylum Porifera The Sponges Learning Outcome G2 Analyse the increasing complexity of the Phylum Porifera and the Phylum Cnidaria Learning Outcome G2 Phylum Porifera & Phylum Cnidaria Student Achievement Indicators Students who have

More information

Ph. Porifera and Ph. Cnidaria

Ph. Porifera and Ph. Cnidaria I. Phylum Porifera (sponges; pore bearer ) A. General characteristics 1. simplest animals 2. asymmetric 3. aquatic habitats a. typically marine 4. live alone or in colonies a. often members of reef habitats

More information

Lab 2 Phylum Porifera and phylum Cnidaria. Grantia. Phylum Porifera. Kingdom :- Animalia. Phylum:- Porifera. Class:- Calcarea. Order:- Leucosolenida

Lab 2 Phylum Porifera and phylum Cnidaria. Grantia. Phylum Porifera. Kingdom :- Animalia. Phylum:- Porifera. Class:- Calcarea. Order:- Leucosolenida Lab 2 Phylum Porifera and phylum Cnidaria Phylum Porifera Adults sessile and attached Radial symmetry or asymmetrical Multi-cellular ; loose aggregation of cells Skeleton made of collagen and spicules

More information

BIOLOGY. An Introduction to Invertebrates CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. An Introduction to Invertebrates CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 33 An Introduction to Invertebrates Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Figure 33.UN08 Metazoa Eumetazoa

More information

Invertebrate Zoology. Unit 2: Phylums: Porifera, Cnidaria, and Ctenophora

Invertebrate Zoology. Unit 2: Phylums: Porifera, Cnidaria, and Ctenophora Invertebrate Zoology Unit 2: Phylums: Porifera, Cnidaria, and Ctenophora Objective 1: Differentiate between the 3 types of Poriferians (Asconoids, Syconoids, and Leuconoids) and the three main classes

More information

Chapter 8. Sponges, Cnidarians, Comb Jellies, and Marine Worms

Chapter 8. Sponges, Cnidarians, Comb Jellies, and Marine Worms Chapter 8 Sponges, Cnidarians, Comb Jellies, and Marine Worms Cnidarians: Animals with Stinging Cells Phylum Cnidaria Includes hydroids, corals, and sea anemones Coelenterate: synonym Named for their cnidocytes

More information

Learning Objectives. The Animal Kingdom: An Introduction to Animal Diversity. Sexual Reproduction

Learning Objectives. The Animal Kingdom: An Introduction to Animal Diversity. Sexual Reproduction Learning Objectives The Animal Kingdom: An Introduction to Animal Diversity Chapter 29 What characters are common to most animals? Advantages and disadvantages of different environments Searching for relationships

More information

Characteristics of Animals

Characteristics of Animals Characteristics of Animals Multicellular Cellular Organization What is this? Heterotrophic Adaptations CHAPTER 9 Cellular Organization 4 Major Functions of Animals Obtain food and water Sustain metabolism

More information

Sponges and Cnidarians

Sponges and Cnidarians The Animal Kingdom Multicellular Sponges and Cnidarians Biology : Chapter 26 Eukaryotic Heterotrophs Cells lack cell walls 95% are invertebrates What Animals Do to Survive Feeding Response Respiration

More information

Notes - Porifera and Cnideria

Notes - Porifera and Cnideria Notes - Porifera and Cnideria - Animals exist on every continent on the planet. Most people consider animals to be the most important kingdom as we are considered animals. But, what is an animal? What

More information

3. Choanoflagellates resemble what? What is the significance of this resemblance?

3. Choanoflagellates resemble what? What is the significance of this resemblance? I. Animal Diversity 1. What are some basic characteristics of the animal kingdom? What characteristics make them different from plants? - Eukaryotic, heterotrophic (we don t make our own food), we store

More information

Chapter 8. Sponges Phylum Porifera Basic characteristics: simple asymmetric sessile

Chapter 8. Sponges Phylum Porifera Basic characteristics: simple asymmetric sessile Chapter 8 Key Concepts Sponges are asymmetric, sessile animals that filter food from the water circulating through their bodies. Sponges provide habitats for other animals. Cnidarians and ctenophores exhibit

More information

basal animalia porifera, cnidaria

basal animalia porifera, cnidaria basal animalia porifera, cnidaria PHYLUM PORIFERA porifera Sponges, no tissues or organs, cellular level of organization outer layer is made of cells called pinacocytes choanocytes (collar cells) Flagella

More information

Phylum Cnidaria Test True/False Indicate whether the sentence or statement is true or false. Mark a for true and b for false.

Phylum Cnidaria Test True/False Indicate whether the sentence or statement is true or false. Mark a for true and b for false. PLEASE WRITE YOUR NAME HERE: 1 Phylum Cnidaria Test True/False Indicate whether the sentence or statement is true or false. Mark a for true and b for false. 1. Polyps are a body form of cnidarians that

More information

COMPARISON BETWEEN PORIFERA AND CNIDARIA. Colwyn Sleep

COMPARISON BETWEEN PORIFERA AND CNIDARIA. Colwyn Sleep COMPARISON BETWEEN PORIFERA AND CNIDARIA Colwyn Sleep INTRODUCTION Porifera Cnidaria Porifera and Cnidaria are organisms which share similar characteristics with one another. -They are both multicellular,

More information

Module 4: Marine Invertebrates I. Kingdom Animalia

Module 4: Marine Invertebrates I. Kingdom Animalia Module 4: Marine Invertebrates I Kingdom Animalia Kingdom Animalia Contains the largest number of species We will split them into 2 large groups Invertebrates- Animals w/o a backbone Vertebrates- Animals

More information

Chapter 13. Radiate Animals. Biological Contributions. Biological Contributions. Phylum Cnidaria. Definition. Position in Animal Kingdom

Chapter 13. Radiate Animals. Biological Contributions. Biological Contributions. Phylum Cnidaria. Definition. Position in Animal Kingdom Copyright The McGraw Hill Companies, Inc. Permission required for reproduction or display. Chapter 13 Radiate Animals Position in Animal Kingdom Both phyla Cnidaria and Ctenophora make up the radiate animals.

More information

Embryonic Development. Chapters 32-34: Animal Diversity AP Biology Fig Zygote Cleavage Blastocoel. Cleavage.

Embryonic Development. Chapters 32-34: Animal Diversity AP Biology Fig Zygote Cleavage Blastocoel. Cleavage. Chapters 32-34: Animal Diversity AP Biology 2012 1 Animal Characteristics Heterotrophs Multicellular Eukaryotes Cells lack cell walls Bodies held together by structural proteins like collagen Contain nervous

More information

The Evolution of Animal Diversity. Dr. Stephen J. Salek Biology 130 Fayetteville State University

The Evolution of Animal Diversity. Dr. Stephen J. Salek Biology 130 Fayetteville State University The Evolution of Animal Diversity Dr. Stephen J. Salek Biology 130 Fayetteville State University Create your own animal? Start with a basic plant. Make the plant into a simple animal such as a worm. Consider:

More information

Sponges and Cnidarians *

Sponges and Cnidarians * OpenStax-CNX module: m48094 1 Sponges and Cnidarians * Miranda Dudzik Based on Sponges and Cnidarians by OpenStax This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution

More information

Dearolf BIOL 220. Freshwater Brackish water Marine Terrestrial Parasitic

Dearolf BIOL 220. Freshwater Brackish water Marine Terrestrial Parasitic CLADE METAZOA Phylum Porifera Hickman Chapter 12 The Origins of Multicellularity Phylum Porifera: Sponges Characteristics of Phylum Porifera (page 248) Figure 12.2 (page 248) Form and Function Figure 12.5

More information

Animal Body Plans. Aggregate Blind sac Tube-within-a-tube Segmented Molluscan Arthropod. Sponges. Acoelomate -Eucoelomate Annelid Mollusca Arthropoda

Animal Body Plans. Aggregate Blind sac Tube-within-a-tube Segmented Molluscan Arthropod. Sponges. Acoelomate -Eucoelomate Annelid Mollusca Arthropoda Animal Body Plans Aggregate Blind sac Tube-within-a-tube Segmented Molluscan Arthropod Sponges Cnidaria, Ctenophora, Platyhelminthes Acoelomate -Eucoelomate Annelid Mollusca Arthropoda Size Constraints

More information

Unit 2. The pellicle acts as a membrane It maintains the shape of the protozoan but remains flexible Ectoplasm

Unit 2. The pellicle acts as a membrane It maintains the shape of the protozoan but remains flexible Ectoplasm Kingdom Protista A polyphyletic group containing: Unit 2 Polyphyletic- The Protozoans (Unicellular - can be very complex) Individuals may group together to form colonies Colony Specialized organelles Pellicle

More information

Porifera, Coelenterata, Ctenophora

Porifera, Coelenterata, Ctenophora Porifera, Coelenterata, Ctenophora Contents Animal Classification - Flow Chart... 3 Phylum Porifera... 4 Phylum Cnidaria... 10 Phylum Ctenophora... 16 www.topperlearning.com 2 Animal Classification - Flow

More information

2303ENV Zoology. Lecture week 1: Phylogeny and Classification

2303ENV Zoology. Lecture week 1: Phylogeny and Classification Lecture week 1: Phylogeny and Classification 2303ENV Zoology Definition of animals: multicellular, eukaryotic, motile (can move independently and spontaneously), heterotrophic (must ingest other organisms

More information

Choanoflagellates. Porifera (sponges) Ctenophora (comb jellies) Cnidaria (jellyfish, corals, sea anemones) Acoela (acoels)

Choanoflagellates. Porifera (sponges) Ctenophora (comb jellies) Cnidaria (jellyfish, corals, sea anemones) Acoela (acoels) Choanoflagellates Fungi Choanoflagellates ANIMALIA Porifera (sponges) ANIMALIA Multicellularity Ctenophora (comb jellies) Diploblasty Cnidaria (jellyfish, corals, sea anemones) Acoela (acoels) Triploblasty

More information

Chapter 24 Introduction to Animals

Chapter 24 Introduction to Animals 1 Chapter 24 Introduction to Animals I. Animal characteristics A. General Animal Features Multicellular B. Feeding and Digestion a. acquire nutrients from various sources obtaining nutrients unique to

More information

Phylum Cnidaria (a stinging thread)

Phylum Cnidaria (a stinging thread) Phylum Cnidaria (a stinging thread) Also known as Phylum Coelenterata (-hollow gut) This phylum contains about 10,000 species worldwide. They are mostly marine with a few freshwater species. Cnidarians

More information

INVERTEBRATE DIVERSITY

INVERTEBRATE DIVERSITY INVERTEBRATE DIVERSITY 1 INVERTEBRATES Animals that lack a backbone Invertebrates 2 1 ANIMAL DEVELOPMENT Meiosis Egg Sperm Zygote Adult Blastula hollow ball of cells in a developing animal Gastrula Stage

More information

Animal Diversity. Features shared by all animals. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers

Animal Diversity. Features shared by all animals. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers Animal Diversity Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers Nutritional mode Ingest food and use enzymes in the body to digest Cell structure and

More information

C. Body is platelike, no symmetry, organs, muscular or nervous systems present. D. 2-3 mm E. marine F. glide over food and secrete digestive enzyme an

C. Body is platelike, no symmetry, organs, muscular or nervous systems present. D. 2-3 mm E. marine F. glide over food and secrete digestive enzyme an Chapter 9 (multicellularity) I. Similarities A. cells are grouped B. groups of cells are specialized for various functions C. All cells in an organism is interdependent. II. Multicelled life appeared ~

More information

Kingdom Animalia: Phyla Porifera and Cnidaria

Kingdom Animalia: Phyla Porifera and Cnidaria Kingdom Animalia: Phyla Porifera and Cnidaria Essential Question(s): What are key characteristics to the animal kingdom? Objectives: 1. Students will be able to distinguish essential characteristics in

More information

Animal Diversity I: Porifera, Cnidaria, Ctenophora, Platyhelminthes, Rotifera, Annelida

Animal Diversity I: Porifera, Cnidaria, Ctenophora, Platyhelminthes, Rotifera, Annelida 1 Animal Diversity I: Porifera, Cnidaria, Ctenophora, Platyhelminthes, Rotifera, Annelida Objectives: Be able to distinguish radial symmetry from bilateral symmetry. Be able to identify which of the phyla

More information

What is an animal? Introduction to Animals. Germ Layers. Tissues and Organs. Structural Support. Types of Symmetry 11/3/2015

What is an animal? Introduction to Animals. Germ Layers. Tissues and Organs. Structural Support. Types of Symmetry 11/3/2015 What is an animal? Introduction to Animals Multicellular chemoorganoheterotrophs Eukaryotes that lack cell walls and chloroplasts Have mitochondria Are motile at some point in their lives Contain collagen

More information

Animals. What are they? Where did they come from? What are their evolutionary novelties? What characterizes their diversification?

Animals. What are they? Where did they come from? What are their evolutionary novelties? What characterizes their diversification? Animals What are they? Where did they come from? What are their evolutionary novelties? What characterizes their diversification? What synapomorphies unite Animals Multicellular Heterotrophs (Metazoans)?

More information

Invertebrate Diversity

Invertebrate Diversity CHAPTER 23 Invertebrate Diversity Summary of Key Concepts Concept 23.1 Diverse animals share several key characteristics. (pp. 494 496) More than a million living species of animals are organized into

More information

Outline. v Definition and major characteristics of animals v Dividing animals into groups based on: v Animal Phylogeny

Outline. v Definition and major characteristics of animals v Dividing animals into groups based on: v Animal Phylogeny BIOSC 041 Overview of Animal Diversity: Animal Body Plans Reference: Chapter 32 Outline v Definition and major characteristics of animals v Dividing animals into groups based on: Body symmetry Tissues

More information

Kingdom Animalia. Zoology the study of animals

Kingdom Animalia. Zoology the study of animals Kingdom Animalia Zoology the study of animals Summary Animals are multicellular and eukaryotic. consume and digest organic materials thereby being heterotrophs. Most are motile at some time in their lives.

More information

Chapter 32 Introduction to Animal Diversity. Copyright 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings

Chapter 32 Introduction to Animal Diversity. Copyright 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings Chapter 32 Introduction to Animal Diversity Welcome to Your Kingdom The animal kingdom extends far beyond humans and other animals we may encounter 1.3 million living species of animals have been identified

More information

What Is an Animal? Animals come in many shapes, forms, and sizes. About 98 percent of all animals are invertebrates. The Kingdom Animalia

What Is an Animal? Animals come in many shapes, forms, and sizes. About 98 percent of all animals are invertebrates. The Kingdom Animalia What Is an Animal? What characteristics do all animals have? Animals come in many shapes, forms, and sizes. Scientists estimate that there are between 1 and 2 million species of animals! Some, like whales

More information

v Scientists have identified 1.3 million living species of animals v The definition of an animal

v Scientists have identified 1.3 million living species of animals v The definition of an animal Biosc 41 9/10 Announcements BIOSC 041 v Genetics review: group problem sets Groups of 3-4 Correct answer presented to class = 2 pts extra credit Incorrect attempt = 1 pt extra credit v Lecture: Animal

More information

Biosc 41 9/10 Announcements

Biosc 41 9/10 Announcements Biosc 41 9/10 Announcements v Genetics review: group problem sets Groups of 3-4 Correct answer presented to class = 2 pts extra credit Incorrect attempt = 1 pt extra credit v Lecture: Animal Body Plans

More information

Resources. Visual Concepts. Chapter Presentation. Copyright by Holt, Rinehart and Winston. All rights reserved.

Resources. Visual Concepts. Chapter Presentation. Copyright by Holt, Rinehart and Winston. All rights reserved. Chapter Presentation Visual Concepts Transparencies Standardized Test Prep Introduction to Animals Table of Contents Section 2 Animal Body Systems Objectives Identify the features that animals have in

More information

Animals contain specialized cells

Animals contain specialized cells What is an Animal? Kingdom Animalia Main Characteristics Members of the Animal Kingdom are: Eukaryotic Multicellular Heterotrophic Have cells with membranes BUT NO cell wall Animals contain specialized

More information

8/23/2014. Introduction to Animal Diversity

8/23/2014. Introduction to Animal Diversity Introduction to Animal Diversity Chapter 32 Objectives List the characteristics that combine to define animals Summarize key events of the Paleozoic, Mesozoic, and Cenozoic eras Distinguish between the

More information

Marine Invertebrate Zoology Phylum Cnidaria

Marine Invertebrate Zoology Phylum Cnidaria Marine Invertebrate Zoology Phylum Cnidaria Introduction Cnidarians are the simplest animals with definite tissues; the cnidarian body consists of two well-defined tissue layers and a third intervening

More information

Intro to Invertebrate STUDENT NOTES Date: 1. Taxonomy : the science of classifying/grouping organisms

Intro to Invertebrate STUDENT NOTES Date: 1. Taxonomy : the science of classifying/grouping organisms Intro to Invertebrate STUDENT NOTES Date: 1 Warm up What does it mean to be an invertebrate? Taxonomy : the science of classifying/grouping organisms Who is the father of our modern day classification

More information

An Introduction to Animal Diversity

An Introduction to Animal Diversity Chapter 32 An Introduction to Animal Diversity PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions

More information

Eukaryote Phylogeny. Glycogen. Kingdom Animalia. Amoebozoa Animalia. Plantae. Chromalveolata Rhizaria. Fungi. Excavata

Eukaryote Phylogeny. Glycogen. Kingdom Animalia. Amoebozoa Animalia. Plantae. Chromalveolata Rhizaria. Fungi. Excavata Eukaryote Phylogeny most protozoans, brown algae, & water molds Excavata Chromalveolata Rhizaria Plantae Amoebozoa Animalia Fungi cpsts. w/ 2 memb. chitin, hyphae glycogen eukaryotic cells (nucleus, etc.)

More information

Bilateria. Radiata. Eumetazoa. Parazoa no true tissues. Multicellularity

Bilateria. Radiata. Eumetazoa. Parazoa no true tissues. Multicellularity Quiz 1. What does porifera mean? 2. Class Hexactinellida's skeletal structure is made out of what material? 3. Characterized as large openings where water comes out 4. Cells responsible for the circulating

More information

Mesozoa, Parazoa, and Metazoa. Chapter 12 pg. 239

Mesozoa, Parazoa, and Metazoa. Chapter 12 pg. 239 Mesozoa, Parazoa, and Metazoa Chapter 12 pg. 239 3 Multicellular Groups: Mesozoa, Parazoa, Eumetazoa Multicellular organisms are divided into three groups: Mesozoa, Parazoa (phylum Porifera, phylum Placozoa)

More information

What Is an Animal? Section 25.1 Typical Animal Characteristics. I. Characteristics of Animals. Biology II Mrs. Michaelsen

What Is an Animal? Section 25.1 Typical Animal Characteristics. I. Characteristics of Animals. Biology II Mrs. Michaelsen What Is an Animal? Section 25.1 Typical Animal Characteristics Biology II Mrs. Michaelsen I. Characteristics of Animals A. All animals are eukaryotic, multicellular, have ways of moving to reproduce, obtain

More information

Simplest metazoan (multi-cellular) Lecture 5 - Sponges!

Simplest metazoan (multi-cellular) Lecture 5 - Sponges! Simplest metazoan (multi-cellular) Lecture 5 - Sponges! Metazoan origins unicellular ancestors Originated during the Precambrian (1.2 billion - 670 million years ago) From what? Two hypotheses: Multinucleated

More information

An Introduction to Animal Diversity

An Introduction to Animal Diversity Chapter 32 An Introduction to Animal Diversity PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions

More information

BIOLOGY. An Introduction to Animal Diversity CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. An Introduction to Animal Diversity CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 32 An Introduction to Animal Diversity Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick A Kingdom of Consumers

More information

The Animals, or Metazoa. Approximate proportions of animal species presently known; The true diversity of animals may be more than 90% Arthropods

The Animals, or Metazoa. Approximate proportions of animal species presently known; The true diversity of animals may be more than 90% Arthropods The Animals, or Metazoa Are some of the best-studied organisms Comprise over a million known species Originated c. the Cambrian (~550 MYA) Most animal phyla are marine; however, due to the diversity of

More information

12.1. Advent of Multicellularity A. Advantages 1. Nature s experiments with larger organisms without cellular differentiation are limited. 2. Increasi

12.1. Advent of Multicellularity A. Advantages 1. Nature s experiments with larger organisms without cellular differentiation are limited. 2. Increasi Phylum: Porifera The Sponges 12.1. Advent of Multicellularity A. Advantages 1. Nature s experiments with larger organisms without cellular differentiation are limited. 2. Increasing the size of a cell

More information

Phylum Cnidaria. General Information. Formerly: The Coelenterates

Phylum Cnidaria. General Information. Formerly: The Coelenterates Phylum Cnidaria Formerly: The Coelenterates General Information Habitat Mostly marine A few freshwater (Hydra; freshwater jellyfish Crasspedacusta can be found in Illinois) Life history Alternation of

More information

BIOS1101 Lab Notes. Contents ANIMALS. Lab 1: Animal Diversity invertebrates. Lab 2: Animal Diversity 2 vertebrates

BIOS1101 Lab Notes. Contents ANIMALS. Lab 1: Animal Diversity invertebrates. Lab 2: Animal Diversity 2 vertebrates Contents ANIMALS Lab 1: Animal Diversity invertebrates Lab 2: Animal Diversity 2 vertebrates Lab 3: Animal Structure 1 Gross morphology Lab 4: Animal Structure 2 Histology Lab 5: The Nervous System & Sensory

More information

Kingdom Animalia. Special Features: Advanced nervous systems means cephalization (faces), brains, and efficient mobility (walk/run/swim/grab)

Kingdom Animalia. Special Features: Advanced nervous systems means cephalization (faces), brains, and efficient mobility (walk/run/swim/grab) Kingdom Animalia Kingdom Animalia Cell Number: Multicellular with extensive specialization Cell Type: Eukaryotic Animal Cells (no cell wall) Food: Heterotrophic Carnivore (meat), Herbivore (plants), Omnivore

More information

Introduction to Animals

Introduction to Animals Introduction to Animals Moving Forward Quizlet Each section we cover, 1 group will go to our class on Quizlet and create 20 flash cards on the topic (/5mks) If I warn you about talking while I m talking,

More information

Classification. The three-domains. The six-kingdom system. The traditional five-kingdom system. Bacteria Archaea Eukarya

Classification. The three-domains. The six-kingdom system. The traditional five-kingdom system. Bacteria Archaea Eukarya Classification The three-domains Bacteria Archaea Eukarya The six-kingdom system Bacteria Archaea Protista Plantae Fungi Animalia The traditional five-kingdom system Monera Protista Plantae Fungi Animalia

More information

BIO 221 Invertebrate Zoology I Spring Correction: Porifera. Lower Metazoan Clades: Choanoflagellata Porifera Placozoa Cnidaria Ctenophora

BIO 221 Invertebrate Zoology I Spring Correction: Porifera. Lower Metazoan Clades: Choanoflagellata Porifera Placozoa Cnidaria Ctenophora BIO 221 Invertebrate Zoology I Spring 2010 Stephen M. Shuster Northern Arizona University http://www4.nau.edu/isopod Lecture 6 Correction: Porifera a. Are distinct from the Placozoa by: 1. Have collar

More information

Animal Origins and Evolution

Animal Origins and Evolution Animal Origins and Evolution Common Features of Animals multicellular heterotrophic motile Sexual reproduction, embryo Evolution of Animals All animals are multicellular and heterotrophic, which means

More information

Features of the Animal

Features of the Animal Features of the Animal Kingdom Bởi: OpenStaxCollege Even though members of the animal kingdom are incredibly diverse, animals share common features that distinguish them from organisms in other kingdoms.

More information

1. General Features of Animals

1. General Features of Animals Chapter 32: An Overview of Animal Diversity 1. General Features of Animals 2. The History of Animals 1. General Features of Animals General Characteristics of Animals animals are multicellular eukaryotic

More information

KINGDOM ANIMALIA CHARACTERISTICS

KINGDOM ANIMALIA CHARACTERISTICS KINGDOM ANIMALIA CHARACTERISTICS EUKARYOTIC MULTICELLULAR HETEROTROPHIC (by ingestion) MOVE AT SOME POINT IN LIFE (not all - sponges are sessile) DIGEST FOOD TO GET NUTRIENTS LACK CELL WALLS CHARACTERISTICS

More information

Chapter 32, 10 th edition Q1.Which characteristic below is shared by plants, fungi, and animals? ( Concept 32.1)

Chapter 32, 10 th edition Q1.Which characteristic below is shared by plants, fungi, and animals? ( Concept 32.1) Chapter 32, 10 th edition Q1.Which characteristic below is shared by plants, fungi, and animals? ( Concept 32.1) A) They are multicellular eukaryotes. B) They are heterotrophs. C) Their cells are supported

More information

23.1 Animal Characteristics EQ Although diverse, what common characteristics do all animal share?

23.1 Animal Characteristics EQ Although diverse, what common characteristics do all animal share? 23.1 Animal Characteristics EQ Although diverse, what common characteristics do all animal share? Sea Slug 23.1 Animal Characteristics Animals are the most physically diverse kingdom of organisms and all

More information

An Introduction to Animal Diversity

An Introduction to Animal Diversity Chapter 32 An Introduction to Animal Diversity PowerPoint Lectures for Biology, Seventh Edition Neil Campbell and Jane Reece Lectures by Chris Romero Overview: Welcome to Your Kingdom The animal kingdom

More information

BIOLOGY. Chapter 27 Introduction to Animal Diversity

BIOLOGY. Chapter 27 Introduction to Animal Diversity BIOLOGY Chapter 27 Introduction to Animal Diversity Fig. 32-1 An Overview of Animal Diversity Multicellular Nutrition mode: Heterotrophic (ingestion) Cell structure & specialization Tissues develop from

More information

Figure 1. Cladogram of the Major Animal Phyla based upon SSU-rRNA

Figure 1. Cladogram of the Major Animal Phyla based upon SSU-rRNA Biology 4B Laboratory Invertebrates I: Porifera, Cnidaria and Platyhelminthes Objectives To understand the basic differences among the invertebrate animal phyla To investigate and learn the obvious external

More information

Chapter 32. Objectives. Table of Contents. Characteristics. Characteristics, continued. Section 1 The Nature of Animals

Chapter 32. Objectives. Table of Contents. Characteristics. Characteristics, continued. Section 1 The Nature of Animals Introduction to Animals Table of Contents Objectives Identify four important characteristics of animals. List two kinds of tissues found only in animals. Explain how the first animals may have evolved

More information

Section 4 Professor Donald McFarlane

Section 4 Professor Donald McFarlane Characteristics Section 4 Professor Donald McFarlane Lecture 11 Animals: Origins and Bauplans Multicellular heterotroph Cells lack cell walls Most have nerves, muscles, capacity to move at some point in

More information

Imagine that you are swimming in warm, tropical waters. Far

Imagine that you are swimming in warm, tropical waters. Far 26 3 Cnidarians Imagine that you are swimming in warm, tropical waters. Far away, delicate jellyfishes float in the ocean currents. Within arm s reach, sea fans sway in the shallow currents. Brightly colored

More information

31.1 What Evidence Indicates the Animals Are Monophyletic?

31.1 What Evidence Indicates the Animals Are Monophyletic? 31.1 What Evidence Indicates the Animals Are Monophyletic? What traits distinguish the animals from the other groups of organisms? In contrast to the Bacteria, Archaea, and most microbial eukaryotes, all

More information

Are these organisms. animals or not?

Are these organisms. animals or not? 1 2 3 4 5 Are these organisms 6 7 8 animals or not? 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 Typical Animal Characteristics Eukaryotic Multicellular Ability to move Reproduce Obtain food (heterotrophic)

More information

Introduction to Animal Kingdom. Invertebrates and Vertebrates

Introduction to Animal Kingdom. Invertebrates and Vertebrates Introduction to Animal Kingdom Invertebrates and Vertebrates Introduction To Animals Vertebrate animal with a backbone. Invertebrate animal without a backbone; includes more than 95% of all animal species

More information

Biology 11. The Kingdom Animalia

Biology 11. The Kingdom Animalia Biology 11 The Kingdom Animalia Objectives By the end of the lesson you should be able to: Describe the 5 ways we classify animals Symmetry Germ layers Body plan Segmentation Animal Evolution Hank Video

More information

Animal Diversity. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers 9/20/2017

Animal Diversity. Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers 9/20/2017 Animal Diversity Chapter 32 Which of these organisms are animals? Animals are multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers Animals share the same: Nutritional

More information

Zoology Name: Block: Exercise #7: The Sponges, Phylum Porifera Lab Guide

Zoology Name: Block: Exercise #7: The Sponges, Phylum Porifera Lab Guide Zoology Name: Block: Exercise #7: The Sponges, Phylum Porifera Lab Guide Members of the phylum Porifera are considered the simplest metazoans, they are little more than a loose grouping of cells, with

More information

introduction to the Animal Kingdom (pages $55-560) Formulating a Definition: Building Vocabulary Skills

introduction to the Animal Kingdom (pages $55-560) Formulating a Definition: Building Vocabulary Skills STUDY GUIDE CHAPTER Sponges, Cnidarians, and Unsegmented Worms Section 26-1 introduction to the Animal Kingdom (pages $55-560) SECTION REVIEW With this section you began your study of the animal kingdom.

More information

An Introduction to Animal Diversity

An Introduction to Animal Diversity An Introduction to Animal Diversity What defines an animal? Why so many species? The early history of animals life 7 Requirements of Animal Life What is an adaptation? Adapting to different habitats A

More information

Life Science 7 th NOTES: Ch Animals Invertebrates

Life Science 7 th NOTES: Ch Animals Invertebrates Life Science 7 th NOTES: Ch 10-11 Animals Invertebrates Write the correct word in the blanks to show directions on an animal body: ** Word Bank (Posterior, Ventral, Dorsal, Anterior) top surface front

More information

Introduction to Animals

Introduction to Animals Introduction to Animals Characteristics of Animals multicellular Except for sponges, animal cells are arranged into tissues. Tissues are necessary to produce organs and organ systems. Tissues, organs,

More information

A. Incorrect! Sponges are mostly marine animals. This is a feature of sponges.

A. Incorrect! Sponges are mostly marine animals. This is a feature of sponges. College Biology - Problem Drill 15: The Evolution of Animal Diversity Question No. 1 of 10 1. Which is not a feature of the phyla porifera- sponges? Question #01 (A) Most are marine animals. (B) They have

More information

BIOLOGY - CLUTCH CH.32 - OVERVIEW OF ANIMALS.

BIOLOGY - CLUTCH CH.32 - OVERVIEW OF ANIMALS. !! www.clutchprep.com Animals are multicellular, heterotrophic eukaryotes that feed by ingesting their food Most animals are diploid, and produce gametes produced directly by meiosis Animals lack cell

More information

Chapter 18. The Evolution of Invertebrate Diversity. Lecture by Joan Sharp

Chapter 18. The Evolution of Invertebrate Diversity. Lecture by Joan Sharp Chapter 18 The Evolution of Invertebrate Diversity PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Copyright 2009 Pearson Education, Inc.

More information

BIOLOGY. An Overview of Animal Diversity CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson

BIOLOGY. An Overview of Animal Diversity CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 32 An Overview of Animal Diversity Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Concept 32.1: Animals are

More information

Natural Sciences 360 Legacy of Life Lecture 07 Dr. Stuart S. Sumida ANIMALIA. (More Similar to Fungi than Plants)

Natural Sciences 360 Legacy of Life Lecture 07 Dr. Stuart S. Sumida ANIMALIA. (More Similar to Fungi than Plants) Natural Sciences 360 Legacy of Life Lecture 07 Dr. Stuart S. Sumida ANIMALIA (More Similar to Fungi than Plants) ANIMAL SIMILARITIES PLANTS FUNGI Cell Walls - Immobile - Often need - substrate - Heterotrophs

More information

Introduction to Animal Diversity Lecture 7 Winter 2014

Introduction to Animal Diversity Lecture 7 Winter 2014 Introduction to Animal Diversity Lecture 7 Winter 2014 Evolution of Animals 1 Prokaryotes Eukaryotes Prokaryotes No nucleus Nucleoid region Simple No membrane bound organelles Smaller (1-5 nm) Evolutionarily

More information

An Overview of Animal Diversity

An Overview of Animal Diversity Figure 32.1 CAMPBELL BIOLOGY Figure 32.1a A Kingdom of Consumers TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson! Most animals are mobile and use traits such as strength, speed, toxins, or camouflage

More information

Introduction to Animal Diversity. Chapter 23.1, 23.2 and additional

Introduction to Animal Diversity. Chapter 23.1, 23.2 and additional Introduction to Animal Diversity Chapter 23.1, 23.2 and additional 1 Think of an Animal... Does your choice have hair or fur? Does it have a skeleton? Over a million species of animals described 95% have

More information

What creates a coral reef? Why are corals able to form huge reefs?

What creates a coral reef? Why are corals able to form huge reefs? Marine ecosystems 5: Coral Reefs Unique features The foundation of the ecosystem is produced by living things Reef-building corals Similarities with tropical rain forests Richness and complexity 3-dimensional

More information

Brief Introduction to the Animal Kingdom

Brief Introduction to the Animal Kingdom Brief Introduction to the Animal Kingdom Vocabulary Vertebrate Invertebrate Detritivore Asymmetry Bilateral symmetry Radial symmetry Cephalization Coelum Pseudocoelum Acoelomates Blastula Blastophore Protosome

More information