You asked: How does the cork act as a protective tissue class 9?

The cork cells are dead and compactly packed with no intercellular space. Their cell walls are coated with a waxy substance, suberin, which do not allow water and gases to pass through. Therefore, it protects the plant against mechanical injury and also prevents the loss of water by evaporation.

How close does cork act as a protective tissue?

The secondary meristem forms on its outer side several layered thick cork or the barks of the trees. Cork act as a protective tissue because (i) Its cells are dead and compactly arranged without intercellular spaces. (ii) They also have deposition of suberin on the walls that makes them impervious to gases and water.

What is protective tissue in plants Class 9?

Hint: Protective tissues are generally present in the outermost layer of the plant body such as leaves, stem, and roots, and offer safety to the plant body. They stop desiccation, mechanical injury, and infection in plants.

IT IS INTERESTING:  How do we protect ourselves from changes in technology?

What is the role of cork in plants Class 9?

The walls of cork cells contain a chemical called suberin, which makes them impermeable to water and gases. Thus, cork cells prevent water loss from plants and also make them more resistant to bacterial and fungal infection.

What is cork or bark How does it act as protective tissue?

Suberin is a waterproofing waxy substance which restricts water movement. Presence of suberin in dead cells of cork and absence of intercellular spaces makes the cells impermeable to water and gases thereby protecting the underlying tissues from desiccation, mechanical injury and pathogenic infection.

Who does the cork act as a protective tissue?

It is a protective tissue with suberized cells. Cork is provided with submarines. Subring is a waterproofing waxy substance that prevents water from entering into the tree and it prevents plants from injury and from loss of evaporation.

How does cork is a protective tissue?

The cork cells are dead and compactly packed with no intercellular space. Their cell walls are coated with a waxy substance, suberin, which do not allow water and gases to pass through. Therefore, it protects the plant against mechanical injury and also prevents the loss of water by evaporation.

What is the example of protective tissue?

Protective tissue covers the surface of leaves and the living cells of roots and stems. Its cells are flattened with their top and bottom surfaces parallel. The upper and lower epidermis of the leaf are examples of protective tissue [View].

How many types of protective tissue are there?

There are two kinds of protective tissues: the epidermis and the suber or cork.

IT IS INTERESTING:  Which antivirus consumes less battery?

What is the main function of cork?

Cork is light weight and does not catch fire easily, due to these properties it is used in making insulators, shock absorbers and sports goods. They protect the plant from harmful microbes. They protect the plant form mechanical injuries. They prevent the loss of water by evaporation and transpiration.

What is the role of a cork?

Function:The main function of cork is to avoid water loss. The thick material of cork makes it hard or water molecules to pass through it and it also protect the plant from mechanical injuries and infections.

What are the uses of cork?

Cork has been used for thousands of years as a stopper in bottles. It has even been found in the tombs dating back to ancient Egypt. Ancient Greeks and Romans also made good use of it, and it was found use as floats for fishing nets, sandals, wine bottle stoppers and even personal flotation devices for fishermen.

What are cork cells and their functions Class 9?

Cork cells are dead cells without having intercellular spaces. They appear at the periphery of roots and stems when they grow older and increase in girth. They also have a chemical called suberin in their walls that makes them impervious to gases and water.

How does bark act as a protective tissue?

The bark is a water proof protective layer (bark) present on the trees to prevent loss of water through evaporation. Since it is majorly consists of dead cell, it forms a rigid covering that protects the interior of the plant from the entry of harmful micro-organisms, mechanical injury, high temperature, etc.

IT IS INTERESTING:  Quick Answer: Should night guard cover gums?