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  •  _______ is found at the tips of roots and shoots to produce primary permanent tissues.Option: 1 Apical Meristem<div class='qna-op

 _______ is found at the tips of roots and shoots to produce primary permanent tissues.

Option: 1

Apical Meristem


Option: 2

Intercalary Meristem


Option: 3

Lateral Meristem


Option: 4

Secondary Meristem


Answers (1)

 

Meristematic tissues on the basis of location:

1. Apical Meristem: It is present in the apices of the main and lateral shoot and root. It is the primary meristem that adds to the length of the plant. Solitary apical cells occur in ferns and other Pteridophytes while apical initials are found in other vascular plants.

Root apical meristem is present behind the root cap. It is sub-apical in position. 
Shoot apical meristem is present at the apex. During the formation of the leaves and elongation, some left-behind cells of the shoot apical meristem constitute the axillary bud. It is also called the marginal meristem.

2. Intercalary Meristem: This meristem is that portion of apical meristem that is left behind during the growth of the axis and formation of permanent cells. It is present mostly at the base of the node (e.g., Mint), the base of the internode (e.g., the stem of many monocots viz., Wheat, Grasses, Pteridophytes like Equisetum) or at the base of the leaf (e.g., Pinus). The intercalary meristems ultimately disappear and give rise to permanent tissues.

3. Lateral Meristem: This meristem occurs laterally in the axis parallel to the sides of the stem and root. These are cylindrical meristems and result in secondary growth that increases the girth of the plant. The interfascicular cambium and cork cambium are the lateral meristem.
 

- Apical Meristem is found at the tips of roots and shoots to produce primary permanent tissues.

Posted by

Sumit Saini

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