question_answer

What are the major groups of micro-organisms?                                            

Answer:

Micro-organisms are divided into four major groups which are as follows:

(i) Bacteria: These are single celled organisms which are harmful, as they cause disease and some of them may be useful as in vaccines.

(ii) Fungi: These are non-green plants which consume their food from the dead organic matter.

(iii) Protozoan: These are unicellular animals which cause diseases like malaria and dysentery.

(iv) Algae: These are photoautotrophic organisms that may be unicellular or multicellular. They play important role in medicines, agriculture, industry and as food.

Viruses are also considered to be micro-organisms but are actually the connecting links between non-living and living organisms.