Question

Some lines on microorganisms.

Answer 1

(a) Lactobacillus causes setting of curd.
(b) Rhizobium helps in nitrogen fixation in soil.
(c) Yeast helps in making fluffy bread and cake.
(d) Some bacteria facilitate retting of jute.
(e) Some bacteria facilitate tanning of leather.
(f) Blue green algae carry out nitrogen fixation.
(g) Penicillium; a fungi; is used to produce antibiotics.
(h) Many microbes carry out decomposition of dead remains of plants and animals.
(i) Yeast causes fermentation which is utilised to produce alcohol.
(j) Processing and ageing of cheese is carried out by microorganisms

Answer 2

A microorganism or microbe is a microscopic organism, which may exist in its single-celled form, or in a colony of cells

a microscopic organism, especially a bacterium, virus, or fungus.

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