Question

Match the organisms in Column I with their action in Column II.

Answer 1

Cholera is water borne infectious disease which is caused by bacterium Vibrio cholera (A-5).

Malaria is caused by Plasmodium, a protozoan which is carried from infected person to other by mosquito female Anopheles (E-4).

Rhizobium is symbiotic bacteria which are found in finger like projections of roots of legumes, termed as root nodules and are responsible for nitrogen fixation (B-1).

A small of amount of curd added to the milk contains millions of Lactobacillus, which at suitable temperature digest the milk sugar lactose into lactic acids thereby coagulating the milk into curd (C-2).

Alcohol fermentation or anaerobic respiration in yeast produces ethanol and carbon dioxide. Thus, adding yeast to dough makes it to rise and subsequent heating process makes the bread porous and light (D-3).

AIDS (Acquired Immunodeficiency Syndrome) is caused by HIV (Human Immunodeficiency Virus) which makes people much more vulnerable to infections and diseases (F-6).