Plant tissues can be classified into two main groups,
1. Simple tissue ( mainly one type of cells are present)
2. Complex tissue (more than one type of cells are present)
Simple plant tissues are divided into three types,
1. Parenchyma tissue
2. Colenchyma tissue
3. Sclerenchyma tissue
Complex tissues are divided into two groups,
1. Xylem tissue
2. Phloem phloem
Parenchyma tissue,
Most common type of plant cells.
Have large vacuole prominent nucleus, thick primary cell wall composed of cellulose and prominent inter cellular spaces.
All are living cells and more or less spherical in shape.
Functions of parenchyma tissue
* storage of food and water
*Allow gas exchange
*Photosynthesis
*Secretion
*Protective covering
Location,
*Cortex
*Fruits
*Flowers
*Leaf and seeds
Sclerenchyma tissue,
Non living cells have tough thick cell walls.
Pits are present in cell wall.
present in two general types,
1. Fibers
2. Sclerids
Location,
*In seed coat
Function,
*Strengthen the tissue which they occur
Xylem tissue
Xylem is a tissue which conduct water and mineral throughout the plant.
There are four types of cells present in xylem
1. Trachieds
2. Vessel elements
3. Xylem parenchyma
4. Xylem fibers
Phloem tissue
Phloem is a tissue which conduct products of photosynthesis mainly in the form of sucrose .
Most of the cells are living cells.
There are four types of cells in phloem tissue,
1. Sieve tube element
2.Companion cells
3. Phloem parenchyma
4. Phloem fibers