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Which of the following is the primary pigment involved in photosynthesis?
Question

Which of the following is the primary pigment involved in photosynthesis?

A.

Chlorophyll a  

B.

Chlorophyll b  

C.

Carotene  

D.

Xanthophyll  

Correct option is A

The correct answer is (a) Chlorophyll a

Explanation:

  • Chlorophyll a is considered the primary photosynthetic pigment because it is essential for the light-dependent reactions.
  • It is the only pigment that can directly convert light energy into chemical energy.
  • It is present in the reaction centers of both Photosystem I and Photosystem II.
  • It absorbs light mainly in the blue-violet and red wavelengths of the spectrum.

Information Booster:

  • Chlorophyll b, Carotenoids (Carotene), and Xanthophylls are known as accessory pigments.
  • These accessory pigments absorb light at different wavelengths and transfer the energy to Chlorophyll a, protecting it from photo-oxidation.

Additional Knowledge:

Carotene (Option c)

  • These are yellow to orange pigments that assist in light absorption but cannot perform the primary conversion of energy alone.

So the correct answer is (a)

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