Molecules that do not dissolve in water very easily are characteristically
A. acids.
B. fats.
C. vitamins.
D. carbohydrates.
B. fats.
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A pollination syndrome is
A. the synchronous release of pollen by many individuals of wind-pollinated trees. B. specializations of plants that attract a specific kind of pollinator. C. the simultaneous release of two sperm, one to affect fertilization and the other to initiate formation of endosperm. D. a brushlike tongue of hummingbirds to which pollen adheres. E. a series of bristles on the backs of insects to which pollen adheres.
Four of the five answers are ways by which animals remove water and/or unwanted solutes. Select the exception
a. excretion in urine b. secretions c. exhalation d. elimination in feces e. bleeding
Describe the mechanism by which a plant responds to gravity
What will be an ideal response?
Maintaining the volume and composition of
extracellular fluid is an essential aspect of __________. Fill in the blank(s) with the appropriate word(s).