Types of simple permanent tissue and their function

Types of simple permanent tissue

Simple permanent tissues:

As we know from their name, these tissues are very simple tissues. These tissues are formed only from a cell. They are made from such cells which are similar in structure, size and perform the same function. These are three types of tissues.

1) Parenchyma tissues

2) Collenchyma tissues

3) Sclerenchyma tissues

1) Parenchyma tissue:

It is present in every part of the plant, such as stem, root, leaf, flower etc.

Shape and structure:

1) Its cell wall is thin.

2) Its shape round is also polygon and elongated.

3) Due to its thin cell wall, it has a lot of intercellular space.

Functions:

1) It stores food inside the cell of the plants.

2) When parenchyma stores chlorophyll near us, we call it chlorenchyma.

3) Its cells become loosely packed, meaning that due to the increased intercellular space, there is a tissue present in it, which we call aerenchyma. Due to this, the plant stands easily in water.

2) Collenchyma tissue:

This tissue is found in the stems of plants and in the stalks of leaves.

Shape and structure:

1) Its cells are living.

2) There is cytoplasm inside their cell.

3) They are oval, polygon and elongated in shape.

4) They are very close to each other so that they have very little intercellular space.

4) Their cell walls are irregularly thickening in the wall, meaning they are thicker and thinner than elsewhere.

5) Their cell wall is made of cellulose.

6) Vacuoles are present inside them.

Functions:

1) It is a mechanical tissue.

2) It provides mechanical strength to the leaves of the plant.

3) It also provides flexibility to the plant.

4) It allows bending in tendrils and stem.

3) Sclerenchyma tissue:

It is present in the stem around the vascular bundles. They are also found in veins of leaves. It is also present in the hard cover of a seed. Such as a nut or almond cover.

Shape and structure:

1) Long and narrow in shape.

2) Their cell wall is made of lignin.

3) Their cell wall thickness is uniform.

4) Cavity inside them ends due to their cell wall being thick.

5) Their cells are completely dead.

6) There is absolutely no intercellular space inside them.

Functions:

1) These tissues provide mechanical strength to the plant cell.

2) These tissues provide protection to the plant cell.

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Complex permanent tissues

Protective tissue

Meristematic tissue

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Ishan Kumar