Describe briefly the four major groups of Protozoa.
Protozoa are microscopic unicellular protists with heterotrophic mode of nutrition. They can be holozoic, saprobic, or parasitic. These are divided into 4 most important groups.(1) Amoeboid protozoa or sarcodines They are unicellular, jelly-like protozoa discovered in clean or sea water and in wet soil. Their frame lacks a periplast. Therefore, they will be bare or included via way of means of a calcareous shell. They typically lack flagella and feature temporary protoplasmic outgrowths known as pseudopodia. These pseudopodia or fake toes assist in motion and shooting prey. They consist of loose residing bureaucracy consisting of Amoeba or parasitic paperwork inclusive of Entamoeba. (2) Flagellated protozoa or zooflagellates They are unfastened residing, non-photosynthetic flagellates with out a mobileular wall. They own flagella for locomotion and taking pictures prey. They encompass parasitic paperwork which include Trypanosoma, which reasons dozing illness in human beings. (3) Ciliated protozoa or ciliates They are aquatic people that shape a big institution of protozoa. Their feature functions are the presence of severa cilia at the whole frame floor and the presence of sorts of nuclei. All the cilia beat withinside the same path to transport the water weighted down meals inner a hollow space referred to as gullet. They consist of organisms such as Paramoecium, Vorticella,etc. (4) Sporozoans They consist of ailment inflicting endoparasites and different pathogens. They are uninucleate and their frame is protected with the aid of using a pellicle. They do now no longer own cilia or flagella. They consist of the malaria inflicting parasite Plasmodium.
