Cork is the outer protective layer of bark of a tree. … Cork is hard and very rigid which can give good insulation. Protective tissues are a special type of tissues which protects other cells and tissues from the external injuries, basically, it works as an external barrier which prevents the external forces.
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.
Why does cork called as protective tissue?
When eperdemis cell became cell they form a thick protective tissue known as Cork. Cork cells are therefore dead cell which are arranged with any intercellular space which make them impervious to gases and water and prevent water loss.
What is cork tissue class 9?
Cork Simple Tissues: These types of tissue consist dead cells with no intercellular spaces. They form the outer layer of old tree trunks. Cork cells have a chemical called suberin in their walls that makes them impervious to gases and water. Cork tissue protects plants from injuries, germs and water loss.
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.
How does cork act 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.
How does the crock act as a protective tissue?
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.
How is cork formed how does it protect the plant?
Cork protects the plants by acting as a cushion against any physecal or mechanical injuries. … The cells of the cork are rich in suberin, which is a jelly like compound. This does not allow easy loss of water from the plants and trees and regulates the exchange of gases between the palnts and its surroundings.
What is the function of cork 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 in biology?
Definition. noun, plural: corks. (botany) A part of the periderm that protects the inner plant tissues from mechanical injuries, water loss, and pathogens, and comprised of cells that are dead at maturity and filled with air, tannins or resins.
What are the advantages of cork?
Benefits of Cork
- These physical properties provide cork all the famous advantages:
- BUOYANCY. …
- COMPRESSIBILITY. …
- RESILIENCY. …
- RESISTANCE TO MOISTURE AND LIQUID PENETRATION. …
- FRICTIONAL QUALITY. …
- LOW THERMAL CONDUCTIVITY. …
- ABILITY TO ABSORB VIBRATION.
What is the 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.
Why are cork cells dead?
Cork cells are genetically programmed not to divide, but instead to remain as they are, and are considered dead cells. Each cell wall is comprised of a waxy substance known as suberin, which is highly impermeable to gases and water.