Question

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Q . classify plants on the basis of their habitats . describe the adaptive features in any one ? .


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Answer 1

Explanation:

Habitats and Adaptive features of plants :-

Habitats -

• Aquatic regions
• Dessert regions
• Snowy regions
• Grassland regions
• Forests regions

Adaptive features -

• Aquatic regions :- The surfaces of leaves and stems of many aquatic plants are covered with a waxy layer. Leaves of some aquatic plants are thin and slender like a ribbom. This shape helps them to withstand fast currents of water. Air spaces in stems and petiols of aquatic plants are useful for floating in water.
• Dessert regions :- Desert plants are either leafless or the leaves are like small needles or have been modified into thorns. As a result they loss 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 in search of water. There is a thick layer of a waxy substance on the stems of this plants, too.
• Snowy regions :- Plants of snowy regions mainly include conifers like Deodar and Pine. This trees are conical in shape due to their sloping branches. In the heavy snowfall and extreme cold in this regions, the conical shape prevents the snow from accumulating on the tree and the thick bark helps the tree to withstand the cold.
• Grassland regions :- Fibrous roots of grasses prevent soil erosion. Grasses in the equatorial region are very tall. Grasses in cold regions are very short.
• Forest regions :- Trees grow tall to get sunlight and climbers and wines grow to a great height with the support of trees. Spring like tendrils on the stems of climbers is an example of adaptation.