Gravitropism is a plant's
A) ability to form an abscission layer, so that the fruits and leaves fall from the plant.
B) ability to grow only upward.
C) apical dominance.
D) response to stress-inducing situations.
E) directional response to gravity.
E
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The most common cause of epidemic waterborne diarrheal disease is ________.
A. Naegleria B. Acanthamoeba C. Giardia intestinalis D. All of the choices are correct.
An organ must contain at least
A. two different tissue types. B. two different cell types. C. all four of the tissue types. D. connective tissue. E. two different muscle types.
In humans, brown adipose tissue is used for ____
a. nitrogenous waste processing b. controlling blood pressure c. nonshivering thermogenesis d. digestion of fats e. cooling the body when exposed
Kidney __________ are small, tubular structures that interact with nearby capillaries to form urine. Fill in the blank(s) with the appropriate word(s)