Which floral structure is considered a male reproductive organ?
a. carpel
b. petal
c. stigma
d. style
e. stamen
ANSWER: e
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Meningococcal meningitis is typically acquired through the
A. genitourinary tract. B. respiratory tract. C. gastrointestinal tract. D. skin.
Four of the five choices below are components
of the human lymphatic system. Select the EXCEPTION.
a. spleen b. pancreas c. tonsils d. lymph nodes e. thymus
One of the drawbacks to using pheromones for communication is:
a. they are effective only at night. b. they can only affect unrelated species. c. they are toxic to unrelated species. d. they require little energy for production. e. they can transmit only a limited amount of information.
The most important kind of selection acting on a well-adapted population in a relatively constant environment is:
A) stabilizing. B) directional. C) catastrophic. D) disruptive.