The largest mass of living material on Earth comes from
A) microorganisms.
B) plants.
C) animals.
D) plants and animals together.
Answer: A
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The breast muscle of turkeys and chickens is usually referred to as light meat, whereas that of wild ducks and geese is described as dark meat. How might this be explained?
A. Turkeys and chickens are not closely related to ducks and geese. B. Turkeys and chickens do not fly for sustained periods, whereas wild ducks and geese do. C. The muscles of ducks and geese do not contain myosins. D. The darker body color of ducks and geese provides protective camouflage against predators.
Which members of Platyhelminthes are parasitic?
a. Planarians and cnidarians b. Flukes and planarians c. Flukes and cnidarians d. Planarians and tapeworms e. Flukes and tapeworms
The most recent level of evolution in primates is considered to be in
a. brain expansion. b. behavior and culture. c. dentition. d. hand grip. e. daytime vision.
If a pea plant is heterozygous for yellow seeds (Yy), which gametes could it produce? Select one:
a. y only b. YYyy c. Y or y d. Y only e. Yy