Aplant with stomata present only on the top of its leaves would be best suited to which environment?
a. water surface
b.
rainforest
c.
underwater
d.
desert

Option A

Explanation:

The number, size and density of stomata vary with the changing environmental conditions. A plant which is completely submerged in water will not be having stomata. While a plant or tree on land will have stomata on its lower surface. The surface area of lower part of a leaf is larger than the surface area of the upper part of the leaf. Generally plants with floating leaves or leaves at the surface of the water have lower portion immersed in water and hence they have stomata on the upper part of the plant.  

Hence, option A is correct

1 and 6 for apex