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Byju's Answer
Standard XII
Biology
Dedifferentiation
Does Pfr stop...
Question
Does Pfr stop flowering?
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Solution
Pfr:
Pfr is the physiologically active form of the protein; exposure to red light produces physical activity in the plant.
Generally, according to the findings of the experiments, it is concluded that the PFR of phytochromes is required for long-term flowering in plants.
It prevents flowering in short days plants.
The hormone appears to be the same in both short-day and long-day plants.
However, the condition that causes the formation varies.
Red light from the sun converts the chromoprotein into Pfr (active form), so plants grow towards the sunlight.
It stimulates the growth of the plant.
Plants grow slowly in shade as soon as the dormant form (Pr) is produced.
When a seed experiences light with the help of the phytochrome system, it germinates.
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