Give reason why on a bright sunny day the leaves of certain plant rolls up?

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Solution

To reduce the water loss from the leaves by transpiration the leaves of certain plants roll up on bright summer day. As the leaves roll themselves the surface area exposed to sun gets reduced as well as the stomata get covered and water loss through stomata can be reduced.

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Q. On a bright sunny day, the leaves of certain plants roll up. Give suitable explanation.

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(e) Cork and bark of trees help in preventing loss of water.

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Question 16

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