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This test consists of 5 multiple choice questions, 5 short answer questions, and 10 short essay questions.

Multiple Choice Questions

1. What type of selection primarily affects the reproductive characteristics of a species?
(a) Artificial selection.
(b) Environmental selection.
(c) Sexual selection.
(d) Natural selection.

2. What classification has a large number of species?
(a) Genera.
(b) Organism.
(c) Flora.
(d) Colony.

3. What is one geographical change that affects islands and continents?
(a) Rainfall changes.
(b) Animal variations.
(c) Sea level changes.
(d) Climate changes.

4. Concerning the difficulty of defining species, sub-species, and variations, what does Darwin suggest about differences?
(a) There are no differences.
(b) Will depend on the climate.
(c) Will depend on the species.
(d) They are arbitrary.

5. What type of populations experience more variations?
(a) Medium populations.
(b) Small populations.
(c) Large populations.
(d) Diverse populations.

Short Answer Questions

1. What results as a climate becomes more hostile?

2. What do naturalists connect with species that have two or three variations?

3. What happens when species are inter-bred?

4. In Chapter 4: Natural Selection, what does Darwin suggest about most variations?

5. What is one function that cave dwelling animals lost through natural selection?

Short Essay Questions

1. How do Naturalists define a species and a variety?

2. Why is the eye used as an example of an organ too complex to be explained by natural selection?

3. How does natural selection explain why organisms pair with other organisms?

4. What can't all examples for disused organs be attributed to correlational growth?

5. What are four objections raised to the theory of natural selection?

6. Why would, on some islands, nature select for beetles that do not fly?

7. Why does Darwin feel the distinction between species variations is arbitrary?

8. What is the importance of indefinite variations?

9. What is the ultimate result of the constant struggle to live?

10. What factors contribute to the slowdown in reproduction in a species?

(see the answer keys)

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