Question

write ten lines on the usefulness of micro-organisms in our lives.

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

hey!!✌✌ answer to ur query is. ......
1.Lactobacillus is used to form curd from milk.
2. Rhizobium present in the roots of pulse plants fix nitrogen from air and supply nitrogen compounds to the pulse plants.
3. Micro-organisms are also used in winemaking, baking, pickling, and other food making processes.
4. Alcoholic fermentation by yeast is widely used in the preparation of wine and bread. 
5. Microbes are used to reduce pollution. For example, decomposers such as bacteria and fungi break down dead bodies and excreta to form inorganic compounds, which can be absorbed by plants.
6. Microbes also play an important role in the preparation of medicines. Antibiotics are chemicals produced by micro-organisms to kill bacteria. Penicilin is an antibotic made from Penicilium.
7. Bacteria present in our intestine helps in proper digestion and release Vitmain B which is absorbed by intestine.
8. Many vaccines are prepared from micro-organisms. These vaccines are given to children to protect them from disease.
9. Certain microbes are also used in the biological treatment of sewage and industrial effluents.
10. Yeast is used in making idlis, bhaturas, bread, pastries and cakes.
hope it helps....