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Q.

An experiment in which a part of leaf is covered with black paper and illuminated to light demonstrates that 

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a

oxygen is released in photosynthesis.

b

CO2 is utilised in photosynthesis.

c

chlorophyll is involved in photosynthesis.

d

light is essential for photosynthesis.

answer is D.

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Detailed Solution

Exposure of a leaf partly covered with black paper shows the need of light in photosynthesis.

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