Question

what is role of epidermis in plant​

Answer 1

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The Role of Epidermis in Plants

• It becomes thick and prevent water loss in plants living in very dry habitats.

• It helps in protection of internal organs of plant.

• Leaf epidermis have stomata to help in gas exchange and transpiration.

• Its cell secrets a waxy, water resistant layer on the outer surface, which protects against loss of water mechanical injury and infections.

• In old plants, epidermal layer becomes thick and form cork. Cork contains a chemical called suberin in their walls, which makes them I'm previous to gas and water.

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Answer 2

Answer:

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-Epidermal cells of aerial parts of the plant secrete a waxy, water resistant layer on their outer surface. It protects them against loss of water, mechanical injury and any attack by pathogenic fungi.

-In desert plants, outer walls of the epidermis are usually thick and covered with CUTIN. Cutin is a chemical substance that is waterproof and reduces loss of water by transpiration.

-The epidermal cells of roots contain long hair- like structures called root hairs which helps to increase surface area for absorption of water and nutrients from soil.