Flatworms are the most primitive animal phylum to have:
A) organs.
B) muscle tissue.
C) asymmetry.
D) a circulatory system.
E) radial symmetry.
Answer: A
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The biome most closely associated with fire is the:
a. desert b. tropical rain forest c. chaparral d. temperate deciduous forest e. boreal forest
Which of the following is (are) essential fatty acids
that are not produced by the human digestive system? a. linoleic b. vitamin Z c. vitamin E d. alpha-linolenic acid e. two of these are correct
Which sense utilizes mechanical energy?
a. sense of temperature b. muscle pressure c. sense of vision d. sense of taste e. sense of smell
Place the structures in the correct order that light would pass through them before reaching the retina.
a. Cornea, b. Aqueous Humor, Lens c. Viterous Humor d. all of the above