Q- (a) Differentiate between meristematic and permanent tissues in plants.
(b) Define the process of differentiation
(c) Name any two simple and two complex permanent tissues in plants.
Answer- (a) Meristematic Tissues:
1. Meristematic Tissues keep dividing throughout the life.
2. Meristematic Tissues are responsible for growth in plant.
3. Meristematic Tissues are living tissues or are living in nature.
4. Meristematic Tissues are oval, rounded and polygonal shaped.
5. They are generally thin walled.
6. The cell of meristematic tissues are formed of cellulose.
7. Intercellular space is not present in these tissue.
8. The cytoplasm of meristematic tissue are non-vacuolated.
Permanent Tissue:
1. Permanent tissue loss the power of dividing throughout the life.
2. Permanent tissue are not responsible for growth in plant.
3. Some permanent tissue are living tissues or are living in nature and some are dead.
4. Permanent tissue are oval, rounded and polygonal shaped or fibre-like.
5. They are generally thick walled but in some cases they are thin walled also.
6. The cell of Permanent tissue are formed of pectin and lignin.
7. Intercellular space is present in these tissue.
8. The cytoplasm of Permanent tissue is vacuolated.
(b) Differentiation is the process or phenomenon of transforming unspecialized cells with definite shape, size, structure and function.
(c) The two simple permanent tissues in plant are:
Parenchyma and Collenchyma
The two complex permanent tissues in plant are:
Xylem tissues and Phloem tisues.