Question

What is Epidermis ? Write function of Epidermis .​

Answer 1

Answer:-

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀✧ Epidermis✧

→ The outermost covering layer of plant organs such as leaf ,roots , stem and flowers is called epidermis.

→ Epidermis is made up of epidermal cells which are closely packed without any intercellular spaces.

→ Epidermis is made up of single layered cell but in some xerophytes it is made up of multilayered cell.

→ The epidermis of aerial plant of the plants are covered by a waxy layer is called cuticle.

→ Cuticle is made up of waxy substance is called cutin.

⠀⠀⠀⠀⠀⠀⠀✧ Function Of Epidermis✧

→ It provides protection to the plant from entry of pathogens .

→ It controls the loss of water from the aerial part of the plants.

→ The stomata present in the leaves regulate exchange of gases.

→ Epidermis of the root along with root hairs increases the surface area for water absorption.

Answer 2

● The epidermis is the outermost of the three layers that make up the skin, the inner layers being the dermis and hypodermis.

Function of Epidermis –

☆ The epidermis layer provides a barrier to infection from environmental pathogens and regulates the amount of water released from the body into the atmosphere through transepidermal water loss.

☆ The epidermis is composed of multiple layers of flattened cells that overlie a base layer (stratum basale) composed of columnar cells arranged perpendicularly.

☆ The layers of cells develop from stem cells in the basal layer.

☆ The human epidermis is a familiar example of epithelium, particularly a stratified squamous epithelium

☆ The word epidermis is derived through Latin from Ancient Greek epidermis, itself from Ancient Greek epi - 'over; upon' and from Ancient Greek derma - 'skin'.

☆ Something related to or part of the epidermis is termed epidermal.

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