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Q 13. What is the role of epidermis in plants?
Answers (1)
The epidermis is the outermost layer of cells of a plant body. The epidermis is usually made of a single layer of cells.
The following are the roles of the epidermis:
1. The entire surface of plants living in very dry habitats has an outer covering of the epidermis to protect against water loss.
2. To protect against loss of water, mechanical injury and invasion by parasitic fungi, epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface.
3. Stomata present on the epidermis help in gaseous exchange and transpiration.
Since it has a protective role to play, epidermal tissue cells form a continuous layer with no intercellular space.
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