Why do plants like water lily and lotus have stomata on the upper surface of their leaves and not on the lower surface ?

Which of the following statements are true of the stomata on the leaves of vascular plants? A) They regulate intake of carbon dioxide needed for photosynthesis.B) They regulate release of oxygen to the air.C) They regulate loss of water.D) They are able to open or close depending on environmental conditions.E) They regulate the absorption of light by chlorophyll.

What are the elements thatconstitute the stomata?

Why can a monocot like an iris branch and increase its number of leaves? Is the fact that the shoot is a rhizome with adventitious roots important? Is water transported from one end of the shoot to the other?