Which statement describes the role of photosynthesis in an ecosystem?

a. Primary producers convert chemical energy to light energy.
b. Primary consumers rely directly on light energy.
c. Primary producers convert light energy to chemical energy as a service to the ecosystem, not for their own
gain.
d. Primary consumers rely on primary producers to make light energy available in a usable form.
e. Primary producers are heterotrophs and thus make no contribution to the flow of energy into the ecosystem.


ANSWER: d

Biology & Microbiology

You might also like to view...

Describe how FISH can be used to determine which cells within a microbial community are actively degrading toluene. Assume the genes involved in the metabolic pathway have been sequenced from several microorganisms and vary only slightly from one another

What will be an ideal response?

Biology & Microbiology

Assess the merits of each action potential analogy; select the representation that corresponds most accurately.

A. An action potential happens like a ripple in a pond; a ripple spreads out and gets slightly weaker as it travels. B. An action potential happens like a row of dominoes falling; the signal has constant velocity and constant strength no matter how long the row of dominoes may be. C. An action potential happens like a crowd doing the wave in a football stadium; the enthusiasm and volume increase as more people get involved.

Biology & Microbiology

Which of the common molecules normally found in the body plays a role in the aging process,forming irreversible cross-linkages between proteins, and contributing to the stiffness and loss of elasticity we may experience with aging?

a) glucose b) phospholipids c) water d) NaCl e) ATP

Biology & Microbiology

Which term refers to all of the chemical reactions of the cell?

A. redox reactions B. catabolism C. phosphorylation D. cellular respiration E. metabolism

Biology & Microbiology