What is adaptation?
Gradual changes occur in the body parts and also in behaviour of organisms which help them to adjust to their adaptations. They take place over a long period of time.
Describe Adaptation of aquatic plants
Some of the aquatic plants are firmly rooted in the soil at the bottom of the water bodies. Their stems are submerged, while leaves and flowers float on the surface. Some plants are entirely afloat. Their roots are not anchored in the soil.
The surfaces of leaves and stems of many aquatic plants are covered with a waxy layer. Leaves of some aquatic plant are thin and slender like a ribbon. This shape helps them to withstand fast currents of water. Air spaces in stems and petioles of aquatic plants are useful for floating in water.
Desert plants are either leafless or their are like small needles or have been modified into thorns.
As a result, they lose very little water by evaporation. The stem stores water and food and is therefore fleshy. The stems are green as they perform photosynthesis in the absence of leaves. Their roots penetrate deep into the soil and some roots spread away into the soil in search of water. There is a thick layer of a waxy substance on the stems of these plants, too
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