Nhận biết (M1)

Certain desert plants open the pores in their leaves only at night, taking in carbon dioxide when the air is cool and storing it chemically for use in photosynthesis the following day. Because water evaporates far more slowly at night than under the intense daytime sun, this adaptation allows the plants to ______.

Which choice most logically completes the text?

• A.

  carry out photosynthesis without ever being exposed to sunlight.

• B.

  take in carbon dioxide while losing much less water than they would during the day.

• C.

  survive indefinitely without any carbon dioxide at all.

• D.

  grow more rapidly than plants living in far wetter environments.