Question

Cork cambium forms tissues that form the cork. Do you agree with this statement? Explain.

Answer 1

Answer:

When secondary growth occurs in the dicot stem and root, the epidermal layer gets broken.

There is a need to replace the outer epidermal cells for providing protection to the stem and root from infections.

Therefore, the cork cambium develops from the cortical region.

It is also known as phellogen and is composed of thin-walled rectangular cells.

It cuts off cells toward both sides.

The cells on the outer side get differentiated into the cork or phellem, while the cells on the inside give rise to the secondary cortex or phelloderm.

The cork is impervious to water, but allows gaseous exchange through the lenticels.

Phellogen, phellem, and phelloderm together constitute the periderm.

Answer 2

Yes, cork cambium forms tissue that forms the cork.  

Explanation:

• When the secondary growth happens in the dicot root or the stem then the epidermal layer is broken so the outer epidermal layer should be replaced by something to protect the internal cells.
• So the cork cambium tissue develops from the cortical region.  These cells differentiated into two parts.
• The outer part is known as 'cork or phellem' and the inner part is known as the 'secondary cortex or phelloderm'.

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