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प्रश्न
Give reasons.
A refrigerator is used in almost every home.
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उत्तर
A refrigerator is used in almost every home because it prevents the spoilage of food. Refrigerator provides an optimum environment for storage of vegetables, fruits, and cooked and uncooked food. If an optimum temperature is not provided, it can lead to the growth of bacteria and fungi, thus leading to spoilage of food.
संबंधित प्रश्न
Which precautions are necessary for proper decomposition of domestic waste?
Give scientific reasons.
Use of mutant strains has been increased in industrial microbiology.
Draw a neat and labelled diagram.
Bacteriophage.
Disease-causing microorganisms are called pathogens.
Mark the correct one as:
Assertion: Malaria is caused by Protozoa.
Reason: The disease is transmitted by mosquito.
Match the names of scientists given in Column A with the discovery made by them given in Column B.
| Column A | Column B |
| (a) Louis Pasteur | (i) Penicillin |
| (b) Robert Koch | (ii) Anthrax bacterium |
| (c) Edward Jenner | (iii) Fermentation |
| (d) Alexander Fleming | (iv) Small pox vaccine |
| (v) Typhoid |
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Which of the following is NOT listed as one of the four main parts of a cell?
What is the primary ecological role of decomposer microorganisms?
What is the fundamental distinction between solitary microorganisms and colony microorganisms in terms of their survival mechanisms?
