Question

why epidermis of leaf contains a layer of cutin on its upper surface?​

Answer 1

Answer:

Epidermal cells of the roots commonly bear long hair-like parts that increase the total absorptive surfce area for water absorption. In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.

Explanation:

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Answer 2

Answer:

Explanation:

• Just like our skin performs protective function the waxy cutical layer of leaf protects it from excessive water loss.