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Consider the following statements about photosynthetic pigments.
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Consider the following statements about photosynthetic pigments.
(A) Chlorophyll a is bright or blue-green on a chromatogram.
(B) Carotenoids absorb mainly in the red region.
(C) Accessory pigments widen the range of wavelengths used.
(D) Accessory pigments protect chlorophyll a from photo-oxidation.
Which of these statements are correct?
Your answer:
Correct answer: (d)
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Explanation
Why (d) is correct
A, C and D are correct. B is wrong: carotenoids absorb mainly in the blue-violet region, not the red.
Why the other options are wrong
- (a) · your answer B is wrong, and A and D are also correct.
- (b) · your answer B is wrong.
- (c) · your answer B is wrong.
NCERT point: Carotenoids absorb blue-violet light and protect chlorophyll.
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