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Name _____________________________
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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
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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 –