Question

Write 10lines on the usefullness of micro organisms in our lives

Answer 1

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

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

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

(iv) Bacteria are used in sewage disposal plants.

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

Answer 2

Answer:

Lactobacillius Bacteria in milk that change into curdcurd. when milk is heated to a temperature of 30°-40° centigrade it and a small amount of old curd added to it. The Lactobacillius in that curd samples get activated and multiply and convert lactose into lactic acid.

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