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(Test: Wed/Thurs)
Natural Selection and Evolution Review
Directions: Identify whether each statement is true or false. IF it is false, correct the statement to make
it true.
1. Organisms adapt to change in the environment on an individual basis.
2. Adaptation leads to change in a species.
3. Variations is caused by a single factor.
4. Species only adapt when they make the decision to adapt.
5. Individual organisms change their genes to adapt to their environment
6. The genetic composition of a population changes from one generation to the next.
7. More advantageous traits become more common in populations.
8. Harmful and unusual traits are more commonly inherited.
Directions: State whether the following examples are homologous or analogous structure.
Define the following terms with the words function and structure
Homologous –
Analogous –
9. Bee wings and Bird wings
10. Legs on a beetle and legs on a cat
11. Bird wings and Bat wings
12. human eye brows and ant antennas
13. Completed fossil record of a tetrapod
14. Bat wing and butterfly wing
Directions: Answer the following questions
15. Which of the following is the most accurate way to configure if a species is related or not?
Homology sequence of amino acids embryology vestigial structures
16. Label the following structures on the four embryos below: eye hole, eye hole, tail, gill slits
17. Natural Selection acts on (adaptations / populations), while Evolution acts on (adaptations /
populations).
18. Define adaptation using the following words: inherited, efficient, environment
Directions: Examine the following rock layers, containing fossils, and then answer the remaining
questions.
19. Label the rock layers 1,2,3,4 from newest layer to oldest layer (1
for the newest layer).
True or False:
20. An aquatic environment was the most recent environment.
21. Dinosaurs and fish coexisted at the same time.
22. Layer A is older than layer D
23. Fish suddenly appeared on earth the same time layer C developed.
Refer to the diagram to the left for the following questions.
24. Which layer do we see an increase in biodiversity?
25. What is a good explanation for the increase in the
biodiversity? (Hint: think of the variation in the shell
population of layer 2).
Directions: Using the diagram to the right answer
the following questions.
24. Which structures are homologous to A?
25. Which structures are homologous to E?
26. Which structures are homologous to P?
Define:
Genetic Drift –
Gene Flow –
Reproductive Isolation –
Vestigial Structures –