Unit 5: Natural Selection and Adaptations Test Review

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1 Answer in complete sentences when appropriate. Use your notes and powerpoints on the teacher s website to help. Your textbook and unit overview are good places to look for vocabulary terms! 1. Define natural selection. 2. Give an example of natural selection. 3. Name two purposes of adaptations: a. b. 4. What is selective breeding? Give two examples of organisms that are currently selectively bred. 5. Choose a species to focus on dogs or bees. Explain possible pros and cons of selective breeding. 6. What are two reasons animals migrate? a. b. 7. Define variation: 8. Explain how a variation might help a species survive. Examples discussed in class are: green vs. brown beetles, different colored moths or Darwin s finches. 9. Explain variation within a population or species by comparing physical adaptations (structural) and behaviors that enhance their survival. Explanation: Physical/Structural Adaptations Examples: Behavioral Adaptations Examples: 1

2 10. Explain how homeostasis can be maintained with both behavioral and structural adaptations in an organism. You may choose any organism, but discuss how they regulate their body temperature (keeping cool): Match the following vocabulary to the correct definition Adaptation Natural selection Internal Charles Darwin Trait Selective breeding Biome External Dichotomous key a. A tool scientist use to help identify a particular specimen. b. Scientist who came up with the theory of Natural selection. c. Human practice of breeding organisms for desired traits. d. Outside of the organism. e. A characteristic passed on from parent to offspring.. f. Inside the organism. g. A trait that improves an organism s chance of survival.` h. Large geography region with certain climate, plants, and animals. I. Organisms better adapted to their environment survive and reproduce. Directions: Study each picture below. Then decide what the stimulus and response is in each drawing. In addition, decide if the stimulus is external or internal 1) 2) Stimulus: Response: Stimulus: Internal or External Stimulus: Response: Stimulus: Internal or External 2

3 Directions: Read the passages below. Then answer the questions that follow in complete sentences. You are walking home from school one day when a large dog jumps out at you from behind a tree. He starts to growl and shows his teeth. You quickly turn around and walk in the opposite direction. 3) What was the stimulus in this situation? 4) What was the response in this situation? 5) Was the stimulus in this situation internal or external? Directions: Match the word with the correct definition. a. Phototropism c. Geotropism/Gravitropism b. Tropism d. Thigmotropism e. Hydrotropism f. Turgor pressure 6. A change in a plant s growth in response to a stimulus. 7. A plant s response to gravity. 8. A Force exerted on the cell wall of a plant when the vacuole is filled with water. 9. A plant s response to touch with another object. 10. A plant s response to light. 11. A plant s response to water. 12. Describe how a seedling s root responds to gravity when it germinates. 13. Which of the pots to the right shows how the plant s stem and roots would grow if a pot originally grown upright (shown below) were knocked on its side and left for several weeks? Circle your answer choice and explain: 3

4 Complete the following statements. 14. The process in which plants make food is called. 15. The sugar made by photosynthesis is as known. 16. The green pigment in the leaves of a plant is known as. 17. What is the energy transformation that occurs in photosynthesis? 18. Which part of a plant s vascular system carries water? 19. Which part of a plant s vascular system carries sap (sugar)? 20. Transpiration provides plants with water for what 4 things? 21. Which variety of grass shown above has the best chance of surviving a long period of dry weather? Why? 22. What are some adaptations that a plant can have so that predators would have a harder time trying to eat them? 23. How does the internal structure of a bird allow it to fly? 4

5 24. What plant adaptation is being demonstrated with this picture? 25. Compare the beaks of the birds in the illustration above then use the dichotomous key to identify Bird W. A Certhidea B Geospiza C Camarhynchus 26. Look at the dichotomous key and identify the organism pictured. The organism is: 5

6 What to study and studying tips: 1. A week before the test, starting going through the notes (both your own and the powerpoints posted on my website) and filling out this test review 2. Highlight key words, especially scientific vocabulary know these terms!! 3. Make flashcards, make a quizlet, find some way to quick quiz yourself! 4. Look over warm ups posted online warm up questions are VERY similar to test questions. 5. Utilize tools at your disposal: teacher website on the unit page, at the bottom, is the unit review section. Check out these videos and other links to help you understand topics you are weak in. Above all ask questions when you do not understand the material! 6

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