1. Photosynthesis is carried out by stem. 2. Stem is covered by a waxy layer. 3. Leaves are in the form of spines.
A
Desert plants
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B
Terrestrial plants
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C
Aquatic plants
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D
Plants in mountain regions
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Solution
The correct option is A Desert plants Leaves are very small or reduced to spines in desert plants. This helps in reducing loss of water from the leaves through transpiration. The leaf-like structure in cactus is the stem that carries out photosynthesis. It is covered by a waxy layer, which helps the plant to retain water.