|Name: _________________________||Period: ___________________|
This test consists of 15 multiple choice questions and 5 short answer questions.
Multiple Choice Questions
1. What is the best example of traits that continue to vary?
(a) Migration characteristics.
(b) Mating habits.
(c) Primary sexual characteristics.
(d) Secondary sexual characteristics.
2. 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) Degree of variation.
(c) Location of variation.
(d) The species that variations happen to.
3. What aspect of organisms is not caused by chance?
4. What is required for a species to continue to grow?
(b) Other species.
(c) Strong males.
(d) Food supply.
5. What is the primary cause for the struggle for survival between species?
(a) Food sources.
(c) Rapid reproduction.
(d) Environmental factors.
6. What may stop a group of carnivorous wolves from growing?
(a) Climate change.
(b) Migration changes.
(c) The group decreases in numbers.
(d) The group becomes too large.
7. What would a variety do in order to become a new species?
(b) Reduce in numbers.
(c) Exceed in numbers from the parent species.
8. What does Darwin suggest about variation for parts that are NOT specialized?
(a) Less variation.
(b) Eventually stops.
(c) More variation.
(d) Becomes correlational.
9. What is the fate of traits that are neither helpful nor unhelpful for survival?
(a) They are subject to artificial selection.
(b) The are bred out of the species.
(c) They are not subject to natural selection.
(d) They are subject to natural selection.
10. What is likely to NOT affect variations that are consistent among individuals?
(b) External factors.
(c) Natural selection.
11. What classification has a large number of species?
12. 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.
13. What do some scientists say is the reason that cultivated plants do not produce seeds?
(c) Poor nutrition.
(d) Poor soil.
14. What type of populations may be more likely to become extinct?
(a) Diverse populations.
(b) Medium populations.
(c) Small populations.
(d) Large populations.
15. What can some amount of variation be attributed to?
(a) Size of species.
(c) External conditions.
(d) Location of species.
Short Answer Questions
1. What animal does Darwin use as an example of an intermediate form of a full-land and full-flying animal?
2. What happens when species are inter-bred?
3. Where did Darwin's ship travel?
4. What is one geographical change that affects islands and continents?
5. On what ship did Darwin ride while writing The Origin of Species?
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