Chapter Review

uSING vOCABULARY

1. For each pair of terms, explain how the meanings of the terms differ.

a. furcula and sternum b. flight feathers and contour feathers c. crop and gizzard d. altricial and precocial

2. Explain the relationship between vas deferentia, oviducts, and cloaca.

3. Use the following key terms in the same sentence: shaft, follicle, vane, barb, barbule, preening, and preen gland.

4. Word Roots and Origins The word precocial is derived from the Latin prefix pre-, which means "before," and the term coquere, which means "to mature." Using this information, explain why the term precocial is a good word for the type of young birds it describes.

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