Online microbiology notes by SAGAR ARYAL
General Characters of Phylum Protozoa Some of the characteristics are: There are about 50,000 known species of Phylum Protozoa. Protozoans exhibit mainly two forms of life; free-living (aquatic, fresh water, sea water) and parasitic (ectoparasites or endoparasites). They are also commensal in habitat. They are small, usually microscopic, not visualize without a microscope. They are … Read moreGeneral Characters of Phylum Protozoa
Classification of Phylum Protozoa Phylum protozoa is a large and varied group and possess a complication in its classification. The conventional scheme followed by Hyman (1940), Hickman (1961) and Storer (1965) etc. recognizes two subphyla on the basis of organs of locomotion and 5 classes as follows: Sub Phylum A: Plasmodroma Locomotory organelles are flagella, … Read moreClassification of Phylum Protozoa
Characteristics of Invertebrates Habitat They are found in seas, fresh water, air, land from snow to desert. 80% are found in terrestrial habitat. Most successful invertebrates of the lands are Arthropods. Protozoans are free-living, parasites or commensals. Sponges and Coelenterates are aquatic animals. Numerical Strength Among 1.25 million animal species, 95% (1.2 million) are invertebrates. … Read moreCharacteristics of Invertebrates