Why do you close a part of leaf with black paper or light screen?
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Light is one of the requirements for photosynthesis. When a part of the leaf is covered from both upper and lower sides with a black paper strip, light will not reach to covered part. Hence, photosynthesis will not take place in covered part of the leaf
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light is one of the requirements for photosynthesis .When apart of a leaf is covered from both upper and lower sides with a black paper strip ,light will not reach to covered part. Hence photosynthesis will not take place olin covered part of the leaf.
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