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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 4: Natural Selection.

Multiple Choice Questions

1. What is the primary cause for the struggle for survival between species?
(a) Rapid reproduction.
(b) Variation.
(c) Environmental factors.
(d) Food sources.

2. Which of the following is a radical change in the structure or behavior of an organism?
(a) Growth.
(b) Increased illness.
(c) Monstrosities.
(d) Extinction.

3. What is the difference between the two types of variations discussed in Chapter 1: Variation Under Domestication?
(a) The area affected by the variation.
(b) Location of variation.
(c) Degree of variation.
(d) The species that variations happen to.

4. What is one reason that some species' traits are different from other species?
(a) Climate.
(b) Inheritance.
(c) Natural selection.
(d) Habitat.

5. What species type is known for a lot of variation between individuals?
(a) Bimorphic.
(b) Polymorphic.
(c) Trapamorphic.
(d) Trimorphic.

Short Answer Questions

1. What typically happens to a species that begins to vary and forms two distinct species?

2. What does natural selection favor in terms of increasing population?

3. In Chapter 1: Variation Under Domestication, what animal does Darwin give as an example for being perfectly adapted for catching its food?

4. What do Naturalists suggest is one definite distinction between a species and a variety?

5. What is the struggle for existence caused by?

(see the answer key)

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