Microorganism is group into the following;

Bacteria

Virus

Protozoa

Fungi

Algae

Rickettsiae

Chlamydia

Although this section is mainly base on bacteria but a brief explanation of microorganism will be explain because with this explanation, it will give more insight of our discussion.

Virus: this are microorganism that is very small, they are the smallest and the simplest life form of microorganism. They are capable of self-replication measured in nanometer 10_-9Mnm.

They do not have cell structure; they are rod like in shape while some others are spherical. Virus is made up of simplest form of some coat of protein and the inner core are made up of nuclei acid, the nuclei acid found inside the virus core are either DNA ( Dioxy ribonucleic acid) or RNA ( Riboxy nucleic acid). Virus never and will never contain both of these nucleic acid, and no virus has ever been found to contain both of these substance.

Protozoa: these are small single or unicellular microorganism that belongs to the lowest division of the animal kingdom. They are made up of protoplasm and they are separated into nucleic and cytoplasm and are known to have no photo-synthetic relationships. Protozoa are group into four classes, the classification base on their locomotive organelles e.g.

Class 1 Rhizopoda: this microorganism belongs to protozoan they have organelles called pseudopodia, they move by the projection of these pseudopodia.

Below is the diagrammatic chart of

Rhizopoda:

Phylum

Protozoa

sarcordina

class

no class

genus

Entermoeba        iodomoeba      Endolimax        Dientamoeba

1. histolytica Iodo Buschili    Endo nana     Die Fragilis

 

1. coli
2. Gingivalis

 

Class ii Mastigophora: This is another class of protozoa. This class has flagellate as an organelles of their movement, the flagella are found around the body of the mastigophora which they are used for their movement; Bellow is diagrammatic of mastigophora;

Phylum

Protozoa

Mastigophora

Class

zoo mastigophora

subclass

no genus’

 

Group A

Cheilomastix; cheimensinilli

Giardia; G. lamblia

Trichomonas; T. homonis, Vaginalis

 

Group B

Leishmania: L. tropica, donovani, Brazilian

Trypanosoma; T. gambiens, cruzi, rhodensiensis

 

Class iii Cilliate: This is the class of protozoa that poses cilia as their locomotive organelles, below are the diagrammatic

ciliate protozoa;

phylum

protozoa

no class

sub phylum cilliophora

cilliata

no sub class

balantidium

bantidium coli.

Class IV sporozoa; this are non-motile protozoa, they have no locomotive organelles. They live parasitically inside their host body.  Below are diagrammatic of

sporozoa;

phylum

protozoa

sporozoa

no class

subclass

Haemosporodea

Plasmodium falciparum

Plasmodium ovale

Plasmodium malariae

Plasmodium vivax

Emeria

Emeria Hominis

Caecida

Isospora

Isospora hominis