Question

Which of the following is/are true for epidermal cells? (I) Most numerous (II). Largest (III. Most specialised (IV). Less elongated in monocot leaves​

Answer 1

Answer:

D

Explanation:

Epidermal cells form the outer covering or surface and are mainly involved in protection and secretion. Guard cells, root hairs, and trichome are all modification of the epidermal cells.

(i) Root hair

Structure:

Unicellular hairs are the extensions of an epidermal cell of roots in the root hair zone.

Function:

It increases the surface area for absorption of water and minerals.

(ii)Trichomes

Structure:

These are epidermal cell modifications. There may be unicellular or multicellular.

Functions:

Secretion and protection

(iii) Guard cell

Structure:

These are bean-shaped cells present on the epidermis of the leaf.

Functions:

These regulate the opening and closing of stomatal pore.

Hence the correct option is D.

Answer 2

Answer:

Option D

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