Question

How does the expose tissue of cortex become protected when primary epidermis fall of in stem?

Answer 1

during secondary growth the primary epidermis spilt, dries, fall off. to protect the exposed tissues and to increase in diameter cork cambium aries in the cortex.

undefined undefined undefined undefined undefined undefinedThe main function of the epidermis of the stem is to protect thecell and support specialized functions. The structure will varydepending on the particular plant, in most cases, it will be asingle-cell thick layer which may have periclinal cellulardivision

Answer 2

Explanation:

• In young dicotyledonous stem has outer most protective layer of stem which is called epidermis.
  
• During maturation from young / primary stem to secondary stem, the primary epidermis splits , dries and fall off.
  
• By falling of primary epidermis in stem the allergens and the infection get into the tissue of the cortex.
  
• The secondary growth proceed with increase in the gap or diameter of cork cambium that mutually happens in the cortex.
  
  Hence cork cambium increase in diameter to protect expose tissue of
  cortex when primary epidermis fall of in stem.
  
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