Question

Which surface of the leaf transpires most? Why?

Answer 1

Lower surface of the leaf transpires most.

Explanation:

• Loss of water from the leaf surface in form of vapour is called transpiration.
• Transpiration is maximum from the lower surface of the leaf.
• It is because usually the distribution and number of stomata vary in the lower and upper surface of leaves.
• The lower surface has a greater number of stomata to carry out transpiration.
• The cobalt chloride paper on the lower surface will change from blue to pink.

Answer 2

Answer:

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