Imagine an extinction event that results in a great loss of taxa but only an insignificant loss of morphological diversity. How has this mass extinction pruned the "tree of life?"
a. Big "branches" of the tree of life have been removed.
b. Many exterior "twigs" have been pruned but not big branches.
c. A single, taxon-rich, but morphologically homogenous, "branch" has gone extinct.
d. A and C.
e. B and C.
E
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Which of the following statements most accurately describes the anatomy of a multicellular fungus?
A. Numerous hyphae make up a mycelium. B. Numerous mycelia make up a hypha. C. Numerous mycelia make up a fruiting body. D. Numerous fruiting bodies make up a mycelium. E. Numerous septa make up a hypha.
The oxygen needed by plants is ultimately derived
from a. aerobic respiration. b. photosynthesis. c. anaerobic respiration. d. glucose. e. carbon dioxide.
Both bats and insects have wings; this is an example of
A. convergent evolution. B. adaptive radiation. C. divergent evolution. D. polyploidy.
Rank these plant types from those that undergo senescence soonest after seed germination to those that live longest.1. herbaceous perennial2. biennial3. annual4. woody perennial
Fill in the blank(s) with the appropriate word(s).