meristematic tissue and type explain
Answers
Explanation:
Meristematic tissues contain undifferentiated cells which are the building blocks of the specialized plant structures. These cells are present in the zone called meristem and can divide actively.
Meristematic tissues contain living cells with varied shapes. They possess a large nucleus devoid of the vacuole. The cells have no intercellular space. The size of the cells is very small and can divide effectively.
Characteristics of Meristematic Tissue
The characteristics of meristematic tissue are as follows:
The cells of the meristematic tissue are commonly called meristems.
The cells of the meristematic tissue have the quality of self-renewal. Every time the cell divides, one cell remains identical to the parent cell and the others form specialized structures.
They have very small and few vacuoles.
They are living and thin-walled.
The protoplasm of the cells is very dense.
The meristematic cells heal the wounds of an injured plant.
The cells of the meristematic tissues are young and immature.
The cells do not store food.
They exhibit a very high metabolic activity.
They possess a single, large and prominent nucleus.
Types of Meristematic Tissue
The meristematic tissues are of the following types:
Meristematic Tissues On the basis of Origin
Promeristem
The earliest and youngest meristematic tissue.
It originates from the embryo.
The primary meristem arises from the promeristem.
It is found in the root and the shoot tips.
Primary Meristem
It arises from the promeristem.
Cells divide actively.
It is present below the promeristem and forms the permanent tissue.
Secondary Meristem
It originates from the primary meristem.
The permanent tissue forms from the secondary meristem.
meristematic tissue is present in the plant
Explanation:
meristematic tissue is classified into 3 types .namely-
1-apical meristem
2-intercalary meristem
3-lateral meristem