Question

Why do the desert plants have fewer stomata?

Answer 1

SO THE RATE OF WATER LOSS(transpiration) may be reduced

Answer 2

Desert plants have fewer stomata:

Desert Condition means less water, heavy sunlight exposures causing high temperature and loss of water content in plant life, high temperature meaning low precipitation.

Thus, due to such harsh conditions, plants that exist in the desert have thick stems, leaves either narrow, small or turned into spikes leaving them with fewer stomata. Most of them have their stomata lie deep in the plant tissues. This helps in water loss by preventing evaporation through the stomata.