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Dictionary » P » Phytochrome Phytochromephytochrome plant pigment protein that absorbs red light and then initiates physiological responses governing light sensitive processes such as germination, growth and flowering. Exists in two forms, pr and pfr, that are interconverted by light. A plant pigment that exists between two forms, [[phytochrome 660 and [[phytochrome 725. They switch between one or the other depending on what time of the day it is, daytime or night time. ![]()
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Results from our forumTrees... some sort of internal rhytm of the tree. It could be sensing the amount of day light - case in which some light-sensing proteins need be involved. Phytochrome or Zeit Lupe are my two best guesses in this last case. Without actually studying the tree, we can only take educated guesses. But I'm pretty ...
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Biology Hangman GameI'm sorry, alwaysasking. There's no 'D', which makes ping's answer correct! It is PHYTOCHROME MECHANISM! Now, as for the prize for the winner... ... ... You've got the honour to... ... ... SET THE NEXT QUESTION! Hehehe...
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Action Spectrum - Red vs blue?phytochrome and photoperiodism are important, but i think you missed the point of the discussion... By the way, red light is more effieciently used by plants because blue light has much more energy, which cannot be used. It's ...
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