Question

Explain the types of parenchyma???

Answer 1

Types of parenchyma:

1.Chlorenchyma is the parenchyma in which the cells contain large number of chloroplasts. Chlorenchyma takes part in photosynthesis. It occurs in the leaves and other green parts of the plant body.

2.Prosenchyma is a type of parenchyma where cells are elongated with tapering ends.

3.Arenchyma is the parenchyma in which the cells enclose large intercellular spaces that are filled with air. Aerenchyma helps in buoyancy and respiration. It is characteristically found in aquatic floating plants.

3.Vascular parenchyma is the parenchyma, which is found associated with the vascular tissues xylem and phloem. Accordingly, it is distinguished into xylem parenchyma and phloem parenchyma.

4.Medullary parenchyma is the parenchyma, which is found radially arranged in between the vascular bundles in the stem. It is meant for storage of reserve food.

5.Conjunctive parenchyma is the parenchyma, which occurs in the root system. It is specially meant for storage of water.

6.Armed parenchyma is the parenchyma, which is found in the epidermis of leaves in some gymnosperms. The cells have many spiny projections. It is defensive in function.

Hope it helps.......

Answer 2

Types of parenchyma:

1. Aerenchyma

2. Storage Parenchyma

3. Stellate Parenchyma

4. Chlorenchyma

5. Prosenchyma


1. Aerenchyma:

Parenchyma which contains air in its intercellular spaces. It helps in aeration and buoyancy.
Example: Nymphae and Hydrilla.

2. Storage Parenchyma:

Parenchyma stores food materials.
Example: Root and stem tubers.

3. Stellate Parenchyma:

Star shaped Parenchyma.
Example: Petioles of Banana and Canna.

4. Chlorenchyma:

Parenchyma cells with chlorophyll. Function is photosynthesis.
Example: Mesophyll of leaves.

5. Prosenchyma:

Parenchyma cells became elongated, pointed and slightly thick walled. It provides mechanical support.

#Hassan