Class 11 Biology Plant Physiology Plant Growth and Development



What is the action spectrum of photoperiodism?
(a)
430 and 660 nm
(b)
640 and 660 nm
(c)
660 and 730 nm
(d)
700 and 900 nm
Correct answer: (c) 
Solution: Photoperiodism is exhibited by plants due to the presence of phytochromes. They are of two types: P660 and P730. Thus, the range of wavelength varies between 660 and 730nm

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plant growth and development
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Connecting you to a tutor in 60 seconds.
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plant growth and development
respiration in plants
transport in plants
anatomy of flowering plants
photosynthesis in higher plants