Graph A shows that ant species richness
a. peaks at the equator.
b. drops by 50 percent at 30 degrees north latitude.
c. is less than 50 at 60 degrees north latitude.
d. is somewhat greater at 30 degrees north latitude
than at 30 degrees south latitude.
e. includes all of these.
Answer: e
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Mitosis comes from the Greek word "mitos," which means
a. to divide. b. to grow. c. to swell. d. thread. e. to shrink.
The most ancient branching point in the phylogeny of animals is the one that distinguishes between having:
a. single cellularity and multicellularity. b. radial or bilateral symmetry. c. defined tissues or no tissues. d. growth by molting or by continuous additions. e. first gut opening develop into a mouth and first gut opening develop into an anus.
In which case is it better for an organism to reach sexual maturity when it is older?
A. When predation is high B. When small individuals have higher mortality than larger ones C. When others in the population reproduce at younger ages D. When population density is low
Because a plant can grow indefinitely at the tips of the roots and shoots, we say that a plant's growth is:
A) limitless. B) indeterminate. C) determinate. D) annualized.