12 Characters of Protozoan

Characters of Protozoan are given below:

1. Microscopic, unicellular or a cellular organism, cell having. Eukokryotic organization.

2. Free living or parasitic, some form conies otherwise solitary.

3. Symmetry none or bilateral or radial.

4. Cell body naked or covered with a thin pellicle some have proteclive housing called test, shell or lorica.

5. No fivision of labour body organization of cytoplamic organellar level. Tissues absent.

6. Locomotors organelles are pseudopodia, flagella cilia or none.

7. Nutrition is holozoic or holophytic or saproioic or parasitis. Some have myxotrophic i.e. combining more than one method. Digestion intracellular.

8. Respiration through cell surface.

9. Osmoregulatory organele, contractile vacole is present sin free living fresh water forms.

10. Reproduction is a sexula by binary fission, multiple fission or budding . some reproduce sexually by fusion of gametes or by conjugation.

11. Encystment an for protecting against adverse conditions, adaptation, distribution and sometimes for reproduction also.

12. Nucleus one or many. Some show nuclear dimorphism.