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Question

Within chloroplasts light is captured by

A
Thylakoids within grana
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B
Grana within cisternae
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C
Cisternae within grana
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D
Grana within thylakoids
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Solution

The correct option is A Thylakoids within grana
Grana are stacks of membrane-bounded, flattened discoid sacs called as thylakoids. Thylakoids are arranged within the grana. Thylakoids contain molecules of chlorophyll. They are the main functional units of chloroplasts. Light is captured by the reaction center present in the membrane of the thylakoids.

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