Low-moisture conditions favor allocation by a plant to
A) leaves.
B) stems.
C) roots.
D) flowers.
C
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The purpose of reducing and oxidizing agents in denaturation and renaturation is the breaking and reforming of the ________ bond.
Fill in the blank(s) with the appropriate word(s).
Protozoa are classified into four groups based on ________.
A. their required nutrients B. the resistance properties of their cysts C. their pathogenicity D. how they move
Corals and jellyfish belong to the phylum containing the
A. nematodes. B. sponges. C. annelids. D. cnidarians. E. flatworms.
Which of the following includes the most likely change in the coloration of the beetle population after pollution and a correct rationale for the change?
(A) The coloration range shifted toward more light-colored beetles, as in diagram I. The pollution helped the predators find the darkened tree trunks. (B) The coloration in the population split into two extremes, as in diagram II. Both the lighter-colored and the darker-colored beetles were able to hide on the darker tree trunks. (C) The coloration range became narrower, as in diagram III. The predators selected beetles at the color extremes. (D) The coloration in the population shifted toward more darker- colored beetles, as in diagram IV. The lighter-colored beetles were found more easily by the predators than were the darker- colored beetles.