What are Cell inclusions ? Explain in detail.

Explanation

Cell Inclusion :
The cell inclusions are the non-living materials present in the cytoplasm . They are organic and inorganic compounds.
Inclusions in prokaryotes :
1. In prokaryotes, reserve materials such as phosphate granules, cyanophycean granules, glycogen granules, poly `beta`- hydroxy butyrate granules, sulphur granules, carboxysomes and gas vacuoles are present.
Inorganic inclusions in bacteria are polyphosphate granules (volutin granules) and sulphur granules. These granules are also known as metachromatic granules.
Inclusions in eukaryotes :
1. Reserve food materials : Starch grains, glycogen granules, aleurone grains, fat droplets.
2. Secretions in plant cells are essential oil, resins, gums, latex and tannins.
3. Inorganic crystals - plant cell have calcium carbonate, calcuium oxalate and silica.
4. Cystolith - Hypodermal leaf cell of Ficus bengalensis, calcium carbonate.
5. Sphaeratphides - Star shaped calcium oxalate, colocasia.
6. Raphides - Calcium oxalate, Eichhornia.
7. Prismatic crystals - Calcium oxalate, dry scales of allium cepa.