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BIOLOGY TOPIC 9 PLANT BIOLOGY (HL)
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Question:
What are the 2 forms of phytochromes?
Author: Sammy UniverseAnswer:
Inactive form (Pr) = converted into active form when it absorbs red light (660 nm) active form (Pfr) = broken down into inactive form when it absorbs far red light (725nm) = gradually goes into inactive form without light
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
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