Multiple choice

Assertion (A): Of the wide range of wavelengths in the electromagnetic spectrum, plants can use only visible light for photosynthesis. Reasoning(R): About 48% of the energy in solar radiation reaching plants is in the form of ultraviolet and infrared light and these are not used in photosynthesis.

  1. Both Assertion and Reasoning are true and R is the correct explanation of A.

  2. Both Assertion and Reasoning are true and R is not the correct explanation of A.

  3. A is true and R is false.

  4. Both A and R are false.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Of the wide range of wavelengths in the electromagnetic spectrum, plants can use only visible light for photosynthesis.About 48% of the energy in solar radiation reaching plants is in the form of ultraviolet and infrared light and these are not used in photosynthesis.

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