Why do desert plants have thick waxy coating of cutin?
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The dessert plants have thicky waxy layer because it is waterproof and reduces water loss through transpiration.
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Epidermal cells on the aerial parts of the plant secrete a waxy, water-resistant layer on their outer surface. It checks the loss of water, mechanical injury and invasion by parasitic fungi. ... In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.
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