Wood and its Types: Soft and Hardwood II Porous and Non Porous wood II Diffuse and Ring porous wood II Spring and Autumn Wood

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Permanent Tissues II Plant Tissue II Types of Plant Tissue II Simple and Complex Tissues II Parenchyma, Collenchyma, Sclerenchyma, Xylem, Phloem II Tissues Class 9 NCERT Easy and Simple Notes

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 Permanent Tissue

Permanent tissues are formed from those meristematic tissues that lost the capacity to divide. The DIFFERENTIATION of meristematic tissue give rise to Permanent tissues.

This process of taking up a permanent shape, size, and a function is called differentiation.

(I) Simple Permanent Tissue that are protective in function:
1.EPIDERMIS:


 

2.CORK/ PHELLEM:




QUESTION PRACTICE:
Which of the following is not the function of epidermis?
  • Protection from adverse conditions 
  • Gaseous Exchange
  • Conduction of Water 
  • Transpiration
Cork cells are made impervious to water and gases due to presence of:
  • Lignin
  • Cellulose
  • Lipid
  • Suberin
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