Class 9 Science - Chapter Tissues NCERT Solutions | List the characteristics of cork. How ar
List the characteristics of cork. How are they formed? Mention their role.
Characteristics of cork are as follows:
- Cells of cork are non living (dead).
- These cells are closely packed and do not have intercellular spaces.
- Their cell wall has deposition of chemical substances i.e suberin.
- It is multilayered.
- Cork is resistant to gases and water due to suberin deposition.
As plants grow older, a strip of secondary meristem replaces the epidermis of the stem. Cells cut on the outer side by this meristem are called cork.
Role of cork is as follows:
- It protects the internal tissues from mechanical injury and from parasitic attack.
- It helps in gaseous exchange through lenticels.
- It gives mechanical support to plants.
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