Explain the structure and functions of Parenchyma.

Explanation

Parenchyma is defined as a living , simple, permanent and storge tissue . It is the baisc and packing tissue occur in all parts of the plant body such as cortex, pith , pericycle etc.
Characters :
1. Cells appear usually oval or spherical .
2. Cells are loosely arranged with many intercellular spaces.
3. Cell wall is thin and made up and cellulose and hemicellulose.
4. Cells have cytoplasm and nucleus and have living tissue .
5. Cells have large and prominent vacuoles.
Types of Parenchyma :
There are two types namely .
(a) Chlorenchyma : Parenchyma tissue in which cells contain chloroplast is called chlorechyma . It is present in green parts of the plant body and helps is photosynthesis .
(b) Aerenchyma - Parenchyma tissue in which intercellular spaces are filled with air is called aerenchyma . It is present in aquatice plants and helps in buoyancy .
Functions :
1. The main function of parenchyma is storage of food .
2. It forms the packing tissue .
3. Chlorenchyma helps in photosythesis.
4. Aernchyma helps in buoyancy in aquatic plants.
5. It becomes meristematic through de-differentiation and helps in secondary growth .
6. It helps in healing of wounds and takes part in regeneration.