define parenchyma sclerenchya and chlorenchyma
Answers
Answer:
Parenchyma :
Consist of live unspecialized cells having thin cell wall.
They are loosely packed and have large intercellular space (space between the cells).
Provides support to the plant and present in all parts like -
- Roots
- Stems
- Leaves
- Fruits
- Seeds.
Sclerenchyma :
Sclerenchyma - in plants, support tissue composed of any of various kinds of hard woody cells.
Mature sclerenchyma cells are usually dead cells that have heavily thickened secondary walls containing lignin.
Unlike collenchyma, mature cells of this tissue are generally dead and have thick walls containing lignin.
Collenchyma :
This tissue is composed by elongated living cells of uneven primary thick walls.
That possess -
- Hemicellulose
- Cellulose
- Pectic materials.
It provides support, structure, mechanical strength, and flexibility to the petiole, leaf veins, and stem of young plants .
Allowing for easy bending without breakage.