Plant Growth And Development Question 25

Question: What is the action spectrum of photoperiodism [BHU 1982]

Options:

A) 430 and 660 nm

B) 640 and 660 nm

C) 660 and 730 nm

D) 700 and 900 nm

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Answer:

Correct Answer: C

Solution:

Because two types of phytochrome is present in plants i.e., P660 and P730.