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1.) Animals with backbones are vertebrate .

2.) An external membranous process of an aquatic animal (such as a fish) used for propelling or guiding the body is a(n) fin .

3.) A sac containing gas in fishes that assists in respiration and buoyancy is a(n) air bladder .

4.) Buoyancy is the tendency of a body to float.

5.) The inner ear is the essential organ of hearing and equilibrium located in the temporal bone and innervated by the auditory nerve.

6.) One half of a sphere is a(n) hemisphere .

7.) To spawn means to produce or deposit eggs.

8.) The male reproductive cells are sperm .

9.) The female reproductive cells are eggs .

10.) The joining of sperm and egg cells resulting in a new individual is to fertilize .

11.) Prey is an animal taken by a predator for food.

12.) Vegetation is plant life forms.

13.) A slender tactile process on the lips of fish is a(n) barbel .

14.) Pectoral is of, situated in, or on the chest.