Question

Hey everyone...



Explain "briefly" about Permanent tissues and their types .






​

Answer 1

◀️◀️ QUESTION ▶️▶️

Explain "briefly" about Permanent tissues and their types .

◀️◀️ ANSWER ▶️▶️

PERMANENT TISSUE

permanent tissue is type of meristematic tissue has lost their ability to divide.

they are permanent in plant

TYPE OF PERMANENT TISSUE

1)Simple permanent tissue

simple permanent tissue are generally same type of cells that have same origin, structure and function.

they are also called an supporting tissue helpful in support

2)Complex Permanent Tissues:

Complex Permanent Tissues are made up of Different type of cell that is more than 2 type which do their specific functions.

Complex Permanent Tissues example is xylem and phloem

I HOPE THIS INFO HELPS YOU ☺️

Answer 2

✨HERE IS YOUR ANS ✨

Simple permanent tissues : A simple permanent tissue is the tissue which is made up of similar permanent cells that carry out the same function or similar set of functions.

Simple permanent tissues : A simple permanent tissue is the tissue which is made up of similar permanent cells that carry out the same function or similar set of functions.Simple permanent tissues are of three types :

Simple permanent tissues : A simple permanent tissue is the tissue which is made up of similar permanent cells that carry out the same function or similar set of functions.Simple permanent tissues are of three types :(I) Parenchyma: (a) Parenchyma is a simple permanent living tissue which is made up of thin-walled similar isodiametric cells, (b) They may be oval, rounded or polygonal in outline, © The cell wall is made up of cellulose, (d) Cells may be closely packed or have small intercellular spaces for exchange of gases. Internally each cell encloses a large central vacuole and a peripheral cytoplasm containing nucleus,

(II) Collenchyma : (a) Collenchyma is a simple permanent tissue of refractile non-lignified living cells which possess pecto-cellulose thickenings in specific areas of their walls, (b) The cells are often elongated. They are circular, oval or angular in transverse section. Each cell possesses a large central vacuole and a peripheral cytoplasm. Wall possesses uneven longitudinal thickenings in specific areas.

(II) Collenchyma : (a) Collenchyma is a simple permanent tissue of refractile non-lignified living cells which possess pecto-cellulose thickenings in specific areas of their walls, (b) The cells are often elongated. They are circular, oval or angular in transverse section. Each cell possesses a large central vacuole and a peripheral cytoplasm. Wall possesses uneven longitudinal thickenings in specific areas.(Ill) Sclerenchyma : (a) Sclerenchyma is a simple supportive tissue of highly thick-walled cells with little or no protoplasm, (b) The cell cavities are narrow. The thickening of the wall is made up of cellulose or lignin or both, © Sclerenchyma is of two types- Sclerenchyma fibres and Sclereids.

(II) Collenchyma : (a) Collenchyma is a simple permanent tissue of refractile non-lignified living cells which possess pecto-cellulose thickenings in specific areas of their walls, (b) The cells are often elongated. They are circular, oval or angular in transverse section. Each cell possesses a large central vacuole and a peripheral cytoplasm. Wall possesses uneven longitudinal thickenings in specific areas.(Ill) Sclerenchyma : (a) Sclerenchyma is a simple supportive tissue of highly thick-walled cells with little or no protoplasm, (b) The cell cavities are narrow. The thickening of the wall is made up of cellulose or lignin or both, © Sclerenchyma is of two types- Sclerenchyma fibres and Sclereids.(i) Sclerenchyma fibres : The sclerenchyma fibres are highly elongated, narrow and spindle-shaped thick-walled cells with pointed or oblique end walls. The adjacent fibres possess simple oblique pits. Sclerenchyma fibres constitute the major mechanical tissue of the plants because they can bear compression, pull, bending and shearing.

(II) Collenchyma : (a) Collenchyma is a simple permanent tissue of refractile non-lignified living cells which possess pecto-cellulose thickenings in specific areas of their walls, (b) The cells are often elongated. They are circular, oval or angular in transverse section. Each cell possesses a large central vacuole and a peripheral cytoplasm. Wall possesses uneven longitudinal thickenings in specific areas.(Ill) Sclerenchyma : (a) Sclerenchyma is a simple supportive tissue of highly thick-walled cells with little or no protoplasm, (b) The cell cavities are narrow. The thickening of the wall is made up of cellulose or lignin or both, © Sclerenchyma is of two types- Sclerenchyma fibres and Sclereids.(i) Sclerenchyma fibres : The sclerenchyma fibres are highly elongated, narrow and spindle-shaped thick-walled cells with pointed or oblique end walls. The adjacent fibres possess simple oblique pits. Sclerenchyma fibres constitute the major mechanical tissue of the plants because they can bear compression, pull, bending and shearing.(ii) Sclereids : They are highly thickened dead sclerenchyma cells with very narrow cavities. Sclereids are broader as compared to the fibres being isodiametric polyhedral, short or cylindrical.

hope it helps you ☺️☺️