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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 3: Struggle For Existence.

Multiple Choice Questions

1. 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 species.
(c) Will depend on the climate.
(d) They are arbitrary.

2. What may stop a group of carnivorous wolves from growing?
(a) The group becomes too large.
(b) Migration changes.
(c) Climate change.
(d) The group decreases in numbers.

3. What term refers to change from one generation to the next?
(a) Growth.
(b) Natural process.
(c) Hereditary modification.
(d) Generational change.

4. What is unique about variation in polymorphic species?
(a) Not dependent on external factors.
(b) All invertibrates.
(c) Not dependent on internal factors.
(d) Dependent on external factors.

5. What happens to a species if their traits and characteristics are not passed down to the next generation?
(a) They will grow.
(b) They will become extinct.
(c) They will change.
(d) They will become unique species.

Short Answer Questions

1. Which species require more years for change?

2. What is the difference between the two types of variations discussed in Chapter 1: Variation Under Domestication?

3. What do some scientists say is the reason that cultivated plants do not produce seeds?

4. Which of the following refers to a scientist who studies living creatures?

5. What would a variety do in order to become a new species?

(see the answer key)

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