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  • The apex of the root is protected by the Option: 1  Calyptra Option: 2 Calyp

The apex of the root is protected by the 

Option: 1

 Calyptra 


Option: 2

Calyptrogen 


Option: 3

Both a and b 


Option: 4

 None of these 


Answers (1)

best_answer

 

 

The four main regions of the roots are as follows:

1. Root cap: It is a thimble-like structure which protects the apex of the root from injuries as the root grows through the soil. It is also called the calyptra.

2. Region of meristematic activity: This region lies a few millimetres above the root cap. The cells of this region are thin-walled and have a dense protoplasm. They divide actively and add new cells.

3. Region of elongation: The cells of this region undergo elongation and enlargement. So, this region is responsible for the growth of the root. 

4. Region of maturation: This region is made up of the cells that have differentiated and matured. From this region, some of the epidermal cells form very fine and delicate thread-like structures called the root hairs. Because of this, this region is also called the piliferous region. 

                            Regions of the Root

Root cap is a thimble-like structure that protects the apex of the root from injuries as the root grows through the soil. It is also called the calyptra. 

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