In a mycorrhizal association, the fungus benefits mainly by
a. absorbing water from the plant.
b. using the plant roots as a growth surface.
c. absorbing mineral ions from the plant.
d. providing water to the plant.
e. absorbing carbohydrates from the plant.
E
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Muscle cells are not typical cells because
a. groups of them fuse in the embryo to form multinucleated fibers. b. they contain actin proteins. c. they contain myosin proteins. d. they respond to stimuli. e. all of these are true
Differentiate between the following terms: threatened species, endangered species, and extinct species. What will be an ideal response?
Restriction enzymes are mainly derived from:
A) fungi. B) animal cells. C) yeast. D) bacteria.
Tinbergen is credited with founding the field of behavioral ________, the study of how natural selection shapes behavior.
A. genetics B. demographics C. ecology D. symptomatology