Define the term Epidermis.

1.	Define the term Epidermis.
Answer» Epidermis • Epidermis forms one cell thick outermost layer of various body organs of plants such as leaves, flowers, stems and roots. • Epidermis is covered outside by cuticle. Cuticle is a water- proof layer of waxy substance called as cutin which is secreted by the epidermal cells. • Cuticle is very thick in xerophytes. • Cells of epidermis of leaves are not continuous at some places due to the presence of small pores called as stomata. • Each stomata is guarded by a pair of bean-shaped cells called as guard cells. These are the only epidermal cells which possess chloroplasts, the rest being colourless.

Answer»

Epidermis

• Epidermis forms one cell thick outermost layer of various body organs of plants such as leaves, flowers, stems and roots.

• Epidermis is covered outside by cuticle. Cuticle is a water- proof layer of waxy substance called as cutin which is secreted by the epidermal cells.

• Cuticle is very thick in xerophytes.

• Cells of epidermis of leaves are not continuous at some places due to the presence of small pores called as stomata.

• Each stomata is guarded by a pair of bean-shaped cells called as guard cells. These are the only epidermal cells which possess chloroplasts, the rest being colourless.

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