Question

collect information about different type of permanent tissue​

Answer 1

there are two types of permanent tissue :-

SIMPLE PERMANENT TISSUE :

Parenchyma - cells of parenchyma tissue are loosely packed and hence, there's a lot of intercellular space between them. the cell wall of parenchyma is made up of cellulose. the parenchyma tissue is known as chlorenchyma when the parenchyma tissue contains chlorophyll to perform photosynthesis and aerenchyma in aquatic plants which helps in buoyancy and also helps aquatic plants to float. this tissue provides mechanical support to the plants.

Collenchyma - collenchyma provides flexibility to the plants especially it's present in leaves and stems. the cells of collenchyma tissue are thickened at the corner. that's why it doesn't have much intercellular space as compared to parenchyma tissue. the cell wall is made up of pectin and cellulose.

Sclerenchyma - cells of sclerenchyma tissue us very tightly packed. There is almost no intercellular space since the cells of schlerenchyma tissue are dead. The cell wall of cells of sclerenchyma is made up legin and they are basically supporting tissues. And this tissue is very rough and rigid. The husk of coconut is made up of sclerenchyma tissue.

COMPLEX PERMANENT TISSUE :

Xylem - this tissue helps in the conduction of water in plants. Elements of xylem tissue :- tracheids, vessels, xylem parenchyma, xylem fibres.

phloem - this tissue helps in the conduction of food in plants. Elements of phloem :- sieve tubes, companion cells, phloem parenchyma and phloem fibres.

Answer 2

Permanent Tissues

The plant tissues which have lost the capacity to divide and further differentiate are called as Permanent Tissues

There are two types of Permanent Tissues:

Simple Permanent Tissue

Tissues which are made up of only one type of cells and share the same function

They are further divided into:

Parenchyma

»Simple,thin walled cells

»They have less cellular spaces

»They consist of living and undifferentiated cells

★Aerenchyma

Parenchyma cells having air cavities are called Aerenchyma. They provide buoyancy to aquatic plants and help them float

★Chlorenchyma

Parenchyma having chlorophyll

Collenchyma

»Living cells with unevenly thickened walls

»They are cylindrical in shape

»They provide support to shoots

Sclerenchyma

»Dead cells and highly thickened walls

»The walls are made up of lignin

»They are hardly any intercellular spaces

»The ectoderm of coconut

»They are classified into sclerids and fibres

Complex Permanent Tissue

•Tissue comprising of different types of cells

•There are two types of complex tissues in a plant:xylem and phloem

•Both the tissues are vascular tissues

Xylem:

• Xylem is a conductive tissue responsible for transportation of water and minerals
• Xylem consists of xylem fibres,xylem parenchyma,vessels and tracheids
• Unidirectional transport of materials
• Except parenchyma cells,all the other xylary elements are dead

Phloem:

• Phloem transports food and other organic materials
• Phloem contains phloem fibres,phloem parenchyma,sieve tubes and companion cells
• Bidirectional transport of materials
• Only the fibres are dead