Question

Cellular layer covering plant organs is
A)Epidermis
B)Hypodermis
C)Cuticle
D)Endodermis

Answer 1

Hint: A protective layer is required to cover the plant organs which acts as a boundary between plants and their external environment. It surrounds important organs like leaves, roots, flowers and stems of plants.

Complete answer:
Let us analyze the options to find out the correct option.

Option A: The epidermis is the most outermost layer of plants which protects them from external environment. It prevents water loss, mechanical injury, helps in regulation of gas exchange, secretes metabolic compounds and does absorption of nutrients. Therefore, this is the correct option.

Option B: Hypodermis consists of an immediately present layer of cells below the epidermis, which is reinforced to provide protection and store water as well. Therefore, this is an incorrect option.

Option C: The cuticle is a water-impervious protective layer that covers the epidermal cells of leaves and plant organs to prevent water loss. Therefore, this is an incorrect option.

Option D: Endodermis is the innermost cortex layer consisting of compact living cells and surrounded by rings impregnated with hydrophobic substances to keep water from flowing apoplastically. Therefore, this is an incorrect option.

Hence, the correct answer is option (A)

Note: 1.The Plant epidermis is composed of a single layer of clonally related cells.
2.The main function is protection.
3.It has certain specialized cells for specific functions.