Question: How does cork act as a protective tissue in plant?

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 cork act as a protective tissue class 9?

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 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.

Which characteristics of cork makes it a protective tissue?

list two characteristics of cork cells which help them to function as protective tissue. Cork cells are airtight, dead, suberized and impervious to water which helps them not to allow entry of any microorganisms and also provide mechanical support or strength to the plant.

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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.

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 adipose tissue class 9?

b)Adipose:They are basically an aggregation of fat cell. Each fat cell is rounded or oval and contain a large droplet of fat that almost fill it. They are abundant below the skin, between internal organs, in yellow bone marrow.

How does 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 does bark act as a protective tissue?

It consists of cork (dead outermost protective tissue of older stem), cork cambium, cortex and phloem. … Phallogen cut the cell inside as phelloderm or secondary cortex and outer side as phellem of cork. The bark is a water proof protective layer (bark) present on the trees to prevent loss of water through evaporation.

Why is the cork 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 .

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What are the main features of meristematic tissue?

Characteristics of Meristematic Tissue:

  • They are composed of immature cells. …
  • Absence of intercellular spaces.
  • Cells are oval, rounded or polygonal in shape.
  • Cells are always living and thin walled.
  • Cells are rich in cytoplasm with minute vacuoles. …
  • Cell is diploid and shows mitotic cell division.

What is the region where parenchyma tissue is present?

Leaves, fruits, and flowers are the regions where the parenchyma tissue is present. Parenchyma is found in soft plant parts, including leaf mesophyll, flowers, fruits and young stems. It is also present in petiole ground tissue, leaf mesophyll, and also in vascular bundles.