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Which of the following pairs is INCORRECT?

(a) Carotenoids - protect chlorophyll from photo-oxidation Your answer
(b) Chlorophyll a - reaction centre pigment Your answer
(c) Chlorophyll b - blue-green band on chromatogram Correct
(d) Xanthophylls - yellow band on chromatogram Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

Chlorophyll b gives a yellow-green band, not a blue-green band; the blue-green band is chlorophyll a. So (c) is the incorrect pair.

Why the other options are wrong

(a) · your answer Correct pair: carotenoids protect chlorophyll from photo-oxidation.
(b) · your answer Correct pair: chlorophyll a forms the reaction centres.
(d) · your answer Correct pair: xanthophylls give a yellow band.

NCERT point: Chlorophyll a: bright or blue-green; chlorophyll b: yellow-green.

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