Question

Why are stomata in most plants more numerous on the lower surface of leaf instead of being on the upper surface?

Answer 1

See stomata are the openings on the leaves which function for the transpiration and exchange of material in and out of the leaf.<br />Therefore if the stomata were present in the upper part of the leaf then the stomata would have been blocked due to the dust particles. <br />And so due to the direct rays of the sun the transpiration would have been more.<br />Therefore more stomata are found in the lower part of the leaf.

Answer 2

stomata in most plants are more in lower surface rather than on upper surface bcz on upper surface there would b more water loss