Microorganisms: Friend and Foe-Commercial Use of Microorganisms [CBSE (Central Board of Secondary Education) Class-8 Science]: Questions 1 - 4 of 4
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Question 1
Question MCQ▾
Micro-organisms decompose organic waste such as
Choices
Choice (4) | Response | |
---|---|---|
a. | Cheese, pickles | |
b. | Vegetable peels, plants and animal waste | |
c. | Medicines | |
d. | Vaccines |
Question 2
Question MCQ▾
Diseases prevented by vaccination are
Choices
Choice (4) | Response | |
---|---|---|
a. | Dengue and Malaria | |
b. | Small pox, tuberculosis, measles | |
c. | Diphtheria, Cholera | |
d. | Both b. and c. are correct |
Question 3
Question MCQ▾
Name micro-organisms which increases soil fertility is:
Choices
Choice (4) | Response | |
---|---|---|
a. | Rhizobium | |
b. | Anabaena and Nostoc | |
c. | Azotobacter | |
d. | All a., b. and c. are correct |
Question 4
Question MCQ▾
The Vaccine is defined as:
Choices
Choice (4) | Response | |
---|---|---|
a. | A preparation containing dead or weakened pathogens that when injected into the body elicit an immune response. | |
b. | Term applied to the lower side of the fish | |
c. | A non -living particle containing genetic matter and covering of protein. | |
d. | A component of the vertebral column |