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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 6: Difficulties on Theory.

Multiple Choice Questions

1. What tends to occur in large groups of genera?
(a) They never inter-breed.
(b) They divide into smaller groups.
(c) They become varieties.
(d) They live over large areas.

2. What may hinder positive traits from being passed on during natural selection?
(a) Normal breeding.
(b) Single organism breeding.
(c) Interbreeding.
(d) Crossbreeding.

3. What is the best example of traits that continue to vary?
(a) Secondary sexual characteristics.
(b) Mating habits.
(c) Primary sexual characteristics.
(d) Migration characteristics.

4. Why do domestic ducks have lighter wings and heavier feet then wild ducks?
(a) Different species.
(b) Domestic ducks walk less.
(c) This is a false statement.
(d) Domestic ducks walk more.

5. What is the struggle for existence caused by?
(a) Quick reproduction.
(b) Little food sources.
(c) Too many species.
(d) Natural selection.

Short Answer Questions

1. What other field of science can natural selection be compared to?

2. Which of the following occurs when one type of variation causes variation in another part of an organism?

3. What classification has a large number of species?

4. What type of relationship do organisms have with one another?

5. What does Darwin suggest about variation for parts that are NOT specialized?

(see the answer key)

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