Recent research on Arabidopsis has shown that florigen is probably ________.
A) a phytochrome molecule that is activated by red light
B) a protein that is synthesized in leaves, travels to the shoot apical meristems, and initiates flowering
C) a membrane signal that travels through the symplast from leaves to buds
D) a second messenger that induces Ca2+ ions to change membrane potential
E) a transcription factor that controls the activation of florigen-specific genes
Correct Answer:
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