Which of the following features would you expect to see in the flowers of wind-pollinated grasses?
A) very large, fragrant, white flowers
B) petals with UV-absorbing "nectar guides"
C) very simple flowers that produce massive quantities of pollen
D) red flowers with long nectar tubes
Answer: C
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Which of the following is TRUE of vaginal walls?
A. They possess no nerve endings. B. They become more flexible with age. C. They are highly elastic. D. They become thicker with age
Which condition is also known as nearsightedness?
a. red-green color blindness b. astigmatism c. hyperopia d. myopia e. cataracts
A newly evolved species may take over an ecological role or ecological niche that is already occupied
if the new species has:a. the ability to alter or change the environmental parameters. b. features that make it competitively superior to the original occupant of that niche. c. the ability to evolve through natural selection, whereas the original occupant cannot continue to evolve. d. the ability to grow to a larger size, thus providing it with a selective advantage. e. fitness that is almost as high as the fitness of the original species.
Osmosis is the diffusion of water across a membrane in response to the concentration of one or more of the ________.
A. solutes B. cells C. membranes D. compartments