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Assertion (A): Light harvesting complexes on the thylakoid membrane broaden the range of light absorbed.
Reason (R): They transfer electrons to the reaction centre.

  • (a) Both A and R are true, and R is the correct explanation of A. Your answer
  • (b) Both A and R are true, but R is not the correct explanation of A. Your answer
  • (c) A is true but R is false. Correct
  • (d) Both A and R are false. Your answer
Your answer: Correct answer: (c)
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Explanation

Why (c) is correct

A is true: the light harvesting complexes contain several pigments, so they absorb a wider range of wavelengths. R is false: they pass light energy, not electrons, to the reaction centre.

Why the other options are wrong

  • (a) · your answer R is false, so it cannot be the explanation.
  • (b) · your answer R is false: antenna pigments transfer energy, not electrons.
  • (d) · your answer A is true.
NCERT point: Antenna pigments absorb light and funnel the energy to the reaction-centre chlorophyll a.
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