What is the spectral range of solar radiation in that photosynthetic organisms are able to use in the process of photosynthesis called?

Category: QuestionsWhat is the spectral range of solar radiation in that photosynthetic organisms are able to use in the process of photosynthesis called?
Editor">Editor Staff asked 3 months ago

What is the spectral range of solar radiation in that photosynthetic organisms are able to use in the process of photosynthesis called?
 
(a) Photosynthetically Reactive Radiation
 
(b) Photosynthetically Active Radiation
 
(c) Photosynthetically Deactive Radiation
 
(d) Photosynthetically Trapped Radiation
 
This question was addressed to me in an interview for job.
 
Enquiry is from Ecosystem topic in section Ecosystem of Biology – Class 12

1 Answers
Editor">Editor Staff answered 3 months ago

Right option is (b) Photosynthetically Active Radiation
 
To elaborate: The spectral range of solar radiation in that photosynthetic organisms are able to use in the process of photosynthesis is called as Photosynthetically Active Radiation. It is designated as PAR and ranges from 400nm to 700nm.