Practice question
Question
Which phytochrome isoform primarily mediates responses to continuous far-red light?
Explanation
PhyA (A) is correct here. This is core PHYTOCHROME: once you know the definition or pathway step, PhyA is the clear fit. The wrong ones are B) PhyB; C) PhyC; D) PhyE. If the topic is about gradients or potentials, water/solutes move from higher to lower of the relevant quantity.
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