Question

hey guys!!!

define meristematic tissue.​

Answer 1

Answer:

Meristematic Tissues

Meristematic tissues, or simply meristems, are tissues in which the cells remain forever young and divide actively throughout the life of the plant. When a meristematic cell divides in two, the new cell that remains in the meristem is called an initial, the other the derivative. As new cells are added by repeated mitotic divisions of the initial cells, the derivatives are pushed farther away from the zone of active division. They stretch, enlarge and differentiate into other types of tissues as they mature. Meristematic cells are generally small and cuboidal with large nuclei, small vacuoles, and thin walls.

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Answer 2

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❒ Meristematic tissue contains undifferentiated cells, which are the building blocks of the specialized plant structures.

❒ Meristematic tissues contain living cells with varied shapes. They possess a large nucleus devoid of the vacuole. The cells have no intercellular space. The zone where these cells exist is known as meristem.

❒ The cells of the meristematic tissue divide actively to form specialized structures such as buds of leaves and flowers, tips of roots and shoots, etc. These cells help to increase the length and girth of the plant.

❒ The characteristics of meristematic tissue are as follows:

✯ The cells of these tissues are commonly called meristems.

✯ The meristematic tissue has 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.

✯ The meristematic tissue is living and thin-walled.

✯ The protoplasm of the cells is very dense.

✯ The meristematic tissues heal the wounds of an injured plant.

✯ The cells of the meristematic tissue are young and immature.

✯ They do not store food.

✯ They exhibit a very high metabolic activity.

✯ They possess a single, large and prominent nucleus.

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