Which of the following statements is true regarding the experiment described in the text to investigate plant communication via volatile chemicals?
A. The investigators found that volatile
chemicals released from damaged plant
tissues attract predators but do not affect
neighboring plants.
B. The experimental plants were exposed to
air that had passed through a chamber
containing plants with simulated herbivore
damage.
C. The investigators were testing the
hypothesis that volatile chemicals released
from plants attract herbivore predators.
D. The investigators found that only the
damaged plants contained elevated levels of
defensive compounds in their leaves when
compared with control plants.
E. The investigators disproved the hypothesis
that some plants "eavesdrop" on their
neighbors' defense responses.
B
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