Question

What is type of meristem???? ​

Answer 1

Answer:

Types of Meristem:-

1. Apical Meristem
2. Intercalary Meristem, and
3. Lateral Meristem

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Answer 2

Types of Meristematic Tissue

The meristematic tissue is of the following types:

Meristematic Tissue On the basis of Origin

Promeristem

• The earliest and youngest meristematic tissue.

• It originates from the embryo.

• The primary meristem arises from the promeristem.

Primary Meristem

• It arises from the promeristem.

• Cells divide actively.

• It is present below the promeristem and forms the permanent tissue.
• It is found in the root and the shoot tips.

Secondary Meristem

• It originates from the primary meristem.

• The permanent tissue forms from the secondary meristem

Meristematic Tissue On the Basis of Position

Apical Meristem

• These are present at the tips of the roots and shoots and help in the increase in height of the plants.

• Various cell divisions facilitate the growth of the cells in the roots and shoots. and help in cellular enlargement.

• Apical meristem is divided into-promeristem zone which contains actively dividing cells, and the meristematic zone which contains protoderm, procambium, and ground meristem.

Intercalary Meristem

• It is located in the leaves and internodes at the intercalary position.

• These help to increase the length of the internode.

• It is found in grass, monocots, and pines.

• It is a part of apical meristem and adds to the height of the plant.

Lateral Meristem

• It is located in the stems and roots on the lateral side.

• It increases the thickness of the plant.

• Vascular cambium and cork cambium are the two lateral meristems.

• These divide periclinically or radially and give rise to secondary permanent tissues