During spring time in Maine, male moose often enter a cow pasture and begin calling to the female cows. The moose may even try to mount the female but the male genitalia do not fit properly inside the female genitalia. This is an example of
A. habitat isolation.
B. gametic isolation.
C. mechanical isolation.
D. behavioral isolation.
E. temporal isolation.
Answer: C
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The numerous thin filaments that make up the body of a multicellular fungus are the:
A. hyphae. B. mycelia. C. fruiting bodies. D. spores. E. rhizoids.
Protection of the embryo is a major requirement for land plants given there is no aquatic environment in which to keep it safe from desiccation and other environmental hazards. Which structure, in both seed and seedless plants, provides the protection and nutrients needed by the embryo as it develops?
a. sporangium b. gametangia c. female gametophyte d. archegonium
What evolutionary advantage do flowers provide to angiosperms?
a. They metabolize sunlight faster than in plants without flowers. b. They prevented predation by herbivores, as their bright colors served as a warning to keep away. c. They developed a cooperative evolutionary relationship with pollinators, which delivered pollen to female gametophytes more directly. d. They provided shade and protection from sunlight in hot climates.
The intertidal zone is defined by
A) being a marine environment. B) containing starfish. C) being continually exposed and submerged by the ocean. D) rocky shores.