Question no 2599 SSC CGL Tier 1 Genral Awareness Questions and Answers Free Online Mock Test 46

SSC CGL Tier 1 :: GA Test 46

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1 .

Which one of the following colours of light is strongly absorbed by plants?

[ A ] Violet and orange
[ B ] Blue and red
[ C ] Violet and yellow
[ D ] Yellow and violet

Answer : Option B

Explanation :

Photosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infra-red or in ultraviolet light

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