Question

Write 10 lines on the usefulness microorganisms in our lives

Answer 1

Answer:

Explanation:

(1) Bacteria cause the decay of dead plants and animals.

(2)  Scientists have discovered ways to change bacteria so that they produce valuable medical.

(3)  Bacteria are used in the production of vinegar, curd, cheese, etc.

(4) Bacteria are used in sewage disposal plants.

(5) Nitrogen fixing bacteria convert the atmospheric nitrogen into nitrates.

(6) Yeast causes fermentation which is utilised to produce alcohol.

(7) Rhizobium helps in nitrogen fixation in soil.

(8)  Lactobacillus causes setting of curd.

(9)  Penicillium; a fungi; is used to produce antibiotics.

(10)  Yeast helps in making fluffy bread and cake.

Answer 2

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Uses of microorganisms:

(i) Microorganisms help in the preparation of curd, bread, cake etc.

(ii) They are used to produce alcohol at large scale.

(iii) Yeast is used to prepare vinegar.

(iv) Microorganisms are used to make wines.

(v) They act as cleaning agent and decompose the waste products into manure.

(vi) They destroy the plant and animal dead bodies by decomposing them.

(vii) They increase soil fertility by fixing nitrogen of atmosphere.

(viii) They are used in making medicines like antibiotics and vaccines.

(ix) They are used as preservatives for food items.

(x) They help in various metabolic activities in our body.

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