The anterior and posterior pituitary glands differ in that ____
a. the anterior pituitary produces peptide hormones while the posterior pituitary produces steroid hormones
b. the anterior pituitary produces its own hormones but the posterior pituitary does not
c. the anterior pituitary is a part of the nervous system; the posterior pituitary is a part of the endocrine system
d. the anterior pituitary is controlled by the hypothalamus whereas the posterior pituitary is controlled by the
adrenal cortex
e. the anterior pituitary is under voluntary control; the posterior pituitary is under involuntary control
ANSWER: b
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The term facultative refers to
A. using chemicals for energy production. B. using light for energy production. C. the ability to exist in a wide range of conditions. D. using oxygen for metabolism. E. existing in a very narrow niche.
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Indicate whether the statement is true or false
The invasion of the land by amphibians posed a number of challenges requiring evolutionary innovations. Which one of the following does NOT match a challenge with a corresponding adaptation found in amphibians?
A. The force of gravity was greater without water's buoying effect, selecting for well-muscled legs. B. Eggs dry out in a terrestrial environment, selecting for the amniotic egg. C. Additional oxygen was needed for larger muscles, selecting for the partially-divided heart and pulmonary circuit. D. Gills tend to collapse out of the water, selecting for lungs and cutaneous respiration.