Which of the following is true of both xylem transport and phloem transport?
A. Both are passive processes that do not require energy from the plant
B. Both involve only living cells
C. Both rely on a gradient of water potential
D. The direction of flow is usually reversible in both
Answer: C. Both rely on a gradient of water potential
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In soft-bottom communities suspension feeders dominate
a. where sediments are generally muddy. b. as infauna. c. where sediments are generally sandy. d. as meiofauna.
All of the following are recommended ways to reduce the risk of developing cardiovascular disease EXCEPT which one?
A) reduce fat and cholesterol intake B) reduce or quit smoking C) engage in regular moderate exercise D) older adults — use hormone replacement therapy E) avoid chronic stress
The number of protons in an uncharged atom _____
A. equals the number of electrons B. equals the number of neutrons C. varies with the different isotopes D. equals the number of electrons in the outer orbital of the atom E. determines its mass number
Dogs, wolves, foxes, and coyotes are genetically similar and form a group called a ________
Fill in the blank(s) with correct word