Question

explain permanent tissue

Answer 1

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Here's your answer.. ⬇⬇

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⚫ Plant Tissue

↪ Plant Tissue are Classified into two types :-

➡ Meristematic Tissue
➡ Permanent Tissue


⚫ Permanent Tissue

↪ The permanent tissue are formed by cell division of meristematic tissues followed by their diffentiated into definite types of tissue cells.
↪ These differentiated cells do not have ability to divide further. They are Classified into two types :-

1) Simple Permanent Tissue
2) Complex Permanent Tissue

⚫ Simple Permanent Tissue :

↪ Simple permanent tissue are made up of only one type of cells. There are three basic types of these tissues named as :-

♦ Parenchyma :-

↪ The simple permanent tissue made up thin walled living cells and present in almost all the organs of plant. Cells are in spherical, oval or elliptical or enlongated, intercellular space are present between cells.
↪ This tissue provide support to the plants and synthesis food and stores it.
↪ The cells also store Tammins, gum, various crystals, resin and some inorganic substance.
↪ This tissue is found to fill up space between different tissues and thus acts as ground tissue.

♦ Collenchyma :-

↪ The cell of this simple permanent tissue are living with spherical, oval or polygonal shape. The cell wall is made up of cellulose which shows deposition of pectin.
↪ The tissues provide mechanical strength to the organs and hence it is known as living mechanical tissue.
↪ The tissue also give elasticity and flexibility to the organs.

♦ Sclerenchyma :-

↪This simple permanent tissue makes the plant hard and stiff.
↪ Cells of the Sclerenchyma are of two types :
1) Sclerenchyma fibres
2) sclerides
↪ They provide mechanical strength and rigidity to the plants and hence are known as dead mechanical tissue.

⚫ Complex Permanent Tissue

↪ Xylem and Phloem are two Most important complex Permanent Tissue.

♦ Xylem :-

↪ The complex Permanent Tissue that conducts water and dissolved mineral salts upward from root to leaves is called Xylem.
↪ Xylem consits :
1) Tracheids
2) Vessels of Tracheae
3) Xylem Parenchyma
4) Xylem fibres.

♦ Phloem :-

↪ This complex Permanent Tissue is concerned with translocation of organic food materials from leaves to the various plant organs.
↪ The Phloem comprise :-
1) Sieve cells
2) Phloem Parenchyma
3) Phloem Fibres
4) Sieve tubes
5) companion cells.

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Answer 2

Permanent Tissues are those tissues which are completely grown and have lost the ability of dividing itself.

Explanation:

Permanent Tissue are of two types

1.Simple Permanent Tissue

2.Complex Permanent Tissue

1.Simple Permanent Tissue

Simple Permanent Tissue are also known as homogenous tissues. because they are made up of a single cell type with the same origin, structure, and function.

They are further classified into three types:

Parenchyma

The cells have an oval or round shape made up of hemicellulose or cellulose.

The cell is thin-walled which have vacuoles and very small nucleus.

Collenchyma

Cells are long and thick-walled made up of cellulose and pectin.

It due to the presence of pectin.

It is found in the epidermis which is the only tissue with the highest refractive index and the vascular bundle of dicot leaf.

Sclerenchyma

These cells are dead tissues, hard and rigid in texture thick-walled with various size and shapes.

They provide mechanical support to the plant.

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