Which tissue in plants lose the ability to divide?

Permanent tissue loses the ability to divide and they take up specific shapes and sizes and functions. This specific property of acquiring a specific shape, size and function is called differentiation.

There are two types of Permanent Tissue

Simple Permanent Tissue.
Complex Permanent Tissue.

Concept:

Permanent tissue:

Permanent tissues are made of those mature tissues that have lost their capacity of division and attain a definite form of various works.
Permanent tissues are of simple tissue and complex tissue.
If permanent tissue is made up of similar types of cells, it is called simple tissue.
If permanent tissue is made up of one or more types of cells, it is called complex tissue.
Xylem and Phloem are the Complex Permanent tissues.
Parenchyma, Sclerenchyma, and Collenchyma are the Simple Permanent Plant tissues.
- Sclerenchyma: supporting tissue in higher plants.
- Parenchyma: makes up most of the cells within leaves, flowers, and fruits.
- Collenchyma: provides support, structure, tensile strength, and flexibility which helps the plant to bend.

Explanation:

Sclerenchyma:

It is a simple permanent plant tissue.
It provides mechanical stiffness and strength to the plants.
It is composed of dead cells i.e non-living or dead cells.

Collenchyma:

Collenchyma tissue is composed of elongated living cells of uneven primary thick walls, which possess hemicellulose, cellulose, and pectic materials.
It provides support, structure, mechanical strength, and flexibility to the petiole, leaf veins, and stem of young plants, allowing for easy bending without breakage.

Parenchyma:

These are living polygonal cells with a big central vacuole & intercellular spaces amidst them.
Parenchymatous cells are responsible to create ground pith & tissue.
It comprising of chloroplasts and that's why it is termed as chlorenchyma & it helps in photosynthesis.

Meristematic tissue:

Growing regions of the plants are called Meristem.
Meristematic tissue has the capability of cell division.
It is round, oval, and multisided.
It grows and constitutes the different parts of the plant.

There are three types of meristematic tissues-

Apical meristem- these are located at the shoot tips and root tips.
Intercalary meristem- located between permanent tissues, at the leaf base and nodes.
Lateral meristem- located at the sides(edges).

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