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This quiz consists of 5 multiple choice and 5 short answer questions through Chapter 8: Hybridism.

Multiple Choice Questions

1. How do some scientists demonstrate the differences between species and variations?
(a) Scientific method.
(b) Natural breeding.
(c) Through hybrids.
(d) Fossil records.

2. In Chapter 4: Natural Selection, what does Darwin suggest about most variations?
(a) They lead to species regeneration.
(b) They are not helpful for survival.
(c) They are helpful for survival.
(d) They are caused by domestication.

3. Why might a hybrid species NOT survive birth?
(a) Natural selection.
(b) Poor respiration.
(c) It is half-related to the mother and has difficulty surviving in the womb.
(d) Physical deformities.

4. Why do hybrids tend to display little variation?
(a) The parents are very close in characteristics.
(b) Because of genetic defects.
(c) There is no natural selection with hybrids.
(d) The parents are the same.

5. What types of species forms are NOT found in nature?
(a) Transitional.
(b) Natural.
(c) Competitve.
(d) Collaborative.

Short Answer Questions

1. In Chapter 8, according to Darwin's example, what domesticated variety is NOT able to reproduce?

2. What is the struggle for existence caused by?

3. What animal does Darwin use as an example of an intermediate form of a full-land and full-flying animal?

4. How is the practice of purposeful selection seen throughout history?

5. As an example of a variation, what does Darwin indicate in Chapter 1 that is a change due to improved diet?

(see the answer key)

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