Question

Differentiate between cysts and trichocysts.

Answer 1

Cysts are means of perennation in protists which usually develop during unfavourable conditions like drought, over-population, lack of food and oxygen, accumulation of metabolic wastes in the cytoplasm and changes in temperature and pH, etc. Encystment is required for survivals protection and dispersal. On the other hand, trichocysts are flask-shaped structures present on the body of some ciliates (e.g., Paramecium). These small dart-like structures are ejected with force to stun prey.