Inclusion Bodies

Reserve material in prokaryotic cells are stored in the cytoplasm in the form of inclusion bodies. These are not bound by any membrane system and lie freely in the cytoplasm. Eg:

• Phosphate granules
  
• Sulphur granules
  (The phosphate granules and sulphur granules are together called metachromatic granules because when they are treated with dyes they appear as coloured)
  
• Cyanophycean granules
  
• Glycogen granules
  
• Gas vacuoles are found in blue green and purple and green photosynthetic bacteria