How epidermis is called protective tissue?

The epidermis is considered a protective tissue because its prime purpose is to form a physical barrier between the outside and inside of the body. On the top stratum (layer) of the epidermis, the cells are dead, and so have no physiological function besides to form a barricade against the outside.

Is epidermis is a protective tissue?

Hence, due to all these functions and also due to its primary function to create a physical barrier between the outside and inside of the body, the epidermis is classified as a protective tissue.

What is known as protective tissue?

The epidermis (outer most layer) is the first layer of the plant body that acts as the first line of defense against various types of harmful objects. It protects the other parts of the body from injuries, bacterial attacks etc. Therefore epidermis is known as a protective tissue.

Why are they called protective tissue class 9?

Their internal structure and tissues are protected from the external environment by means of specific tissues called as protective tissues. These tissues present in plant’s stem, roots, leaves, etc, also helps plants by preventing the loss of water.

IMPORTANT:  Best answer: What type of sunscreen is recommended to protect your skin?

Why is epithelial tissue called protective tissue?

Explanation: Epithelial tissue covers and protects many organs and cavities within the body. … In skin, many layers of epithelial cells are present to prevent wear and tear. Hence, it acts as a protective tissue in the animal body.

What type of tissue is epidermis?

The epidermis is a cornified stratified squamous epithelium. It consists mainly of keratinocytes which multiply in the basal layer of the epithelium, and then leave this layer toward the outer surface. Along the way they undergo the process of keratinization before its dead.

Why are epidermal and cork cells are called protective tissue?

epidermis and cork cells are known as protected tissue because epidermis and cork cells protect the plant from water loss and protects the plant from insects. epidermis and cork cells had waxy coating known as cutin and suberin which helps the plant from water loss .

How does cork and epidermis acts as protective tissue?

What is the role of epidermis in plant? Cork acts as a protective tissue because its cells are dead and compactly arranged without intercellular spaces. They have deposition of suberin on the walls that make them impervious to gases and water. … It protects all the parts of plants.

What is epidermal tissue class 9?

The outer most layer of cells is called epidermis. The epidermis is usually made of a single layer of cells. The epidermis may thicker in plants of dry habitats. Since, it has a protective role to play, cells of epidermal tissue form a continuous layer without intercellular spaces.

IMPORTANT:  Why do we need financial security?

What is the role of epidermis in plants Class 9 Ncert?

Answer: The epidermis is formed of single contimous layered cells. It covers without any intercellular space and protects all parts of the plant. … Epidermal cells on the aerial parts of the plant secrete a waxy, water-resistant layer on their outer surface.

Is epithelial layer a permeable layer?

Epithelial layer is permeable and is found where small molecules cross the membrane by diffusion and filtration. All layers and organs in the body are lined by a group of tissues called epithelial tissues which are commonly referred to as epithelium. They cover the surface of all internal as well as external organs.

Which epithelium is known as pavement epithelium?

A simple squamous epithelium, also known as pavement epithelium, and tessellated epithelium is a single layer of flattened, polygonal cells in contact with the basal lamina (one of the two layers of the basement membrane) of the epithelium.

How is epidermis different from cork?

The main difference between epidermal cells and cork cells is that epidermal cells cover the entire plant body during primary growth whereas cork cells cover the stem and root of the plant after the secondary growth of the plant. … They occur as a single layer of cells. Cork cells originate from the cork cambium.