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The light harvesting complex (antenna) of each photosystem consists of

(a) only carotenoids and xanthophylls, without proteins Your answer
(b) the enzymes of the Calvin cycle and RuBisCO Your answer
(c) hundreds of pigment molecules bound to proteins Correct
(d) a single molecule of chlorophyll a only Your answer

Your answer: Correct answer: (c)

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Explanation

Why (c) is correct

Each light harvesting complex (antenna) is made of hundreds of pigment molecules bound to proteins.

Why the other options are wrong

(a) · your answer The antenna includes chlorophylls too, and the pigments are bound to proteins.
(b) · your answer Calvin cycle enzymes are in the stroma, not in the antenna.
(d) · your answer A single chlorophyll a molecule forms the reaction centre, not the antenna.

NCERT point: Antennae make photosynthesis more efficient by absorbing many wavelengths.

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