Write 10 lines about usefulness of microorganisms
Answers
Answer:
(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
Explanation:
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Answer:
1. Penicillium, a fungi is used to produce antibiotics like penicillin.
2. Rhizobium helps in nitrogen fixation in soil and thus, increases the fertility of the soil.
3. Yeast is widely used in bakery for making fluffy bread and cake.
4. Blue green algae carry out nitrogen fixation.
5. Lactobacillus is used in dairy industries for setting of curd and in cheese making.
6. Many microbes carry out decomposition of dead remains of plants and animals.
7. Spirulina, yeast are used as single cell proteins (supplemetary food).
8. Yeast is used on commercial basis for the production of alcohol via fermentation.
9. Processing and ageing of cheese is carried out by microorganisms.
10. Some microroganisms are used as a probiotic (live bacteria and yeasts that are good for digestive system and maintain good health of the host). They are called as 'good' or 'useful' bacteria.