Thursday, November 12, 2009

Would you expect the leaf of a desert cactus or the leaf of a water lily ot have more stomates?

explain.-have proof please

Would you expect the leaf of a desert cactus or the leaf of a water lily ot have more stomates?
water lily
Reply:Desert plants and conifers have specially adapted structures, such as thick cuticles, reduced leaf areas, sunken stomata and hairs to reduce transpiration and conserve water. Many cacti conduct photosynthesis in succulent stems, rather than leaves, so the surface area of the shoot is very low. Many desert plants have a special type of photosynthesis, termed Crassulacean acid metabolism or CAM photosynthesis in which the stomata are closed during the day and open at night when transpiration will be lower.
Reply:leaf of the water lilly....the leaf of cacti are the spines


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