Microorganisms: Friend and Foe-Commercial Use of Microorganisms (CBSE Class-8 Science): Questions 1 - 4 of 4

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Question number: 1

» Microorganisms: Friend and Foe » Commercial Use of Microorganisms » Cleaning the Environment

MCQ▾

Question

Micro-organisms decompose organic waste such as

Choices

Choice (4) Response

a.

Vegetable peels, plants and animal waste

b.

Medicines

c.

Cheese, pickles

d.

Vaccines

Question number: 2

» Microorganisms: Friend and Foe » Commercial Use of Microorganisms » Vaccine

MCQ▾

Question

Diseases prevented by vaccination are

Choices

Choice (4) Response

a.

Diphtheria, Cholera

b.

Dengue and Malaria

c.

Small pox, tuberculosis, measles

d.

Both a. and c. are correct

Question number: 3

» Microorganisms: Friend and Foe » Commercial Use of Microorganisms » Increasing Soil Fertility

MCQ▾

Question

Name micro-organisms which increases soil fertility is:

Choices

Choice (4) Response

a.

Azotobacter

b.

Anabaena and Nostoc

c.

Rhizobium

d.

All a. , b. and c. are correct

Question number: 4

» Microorganisms: Friend and Foe » Commercial Use of Microorganisms » Vaccine

MCQ▾

Question

The Vaccine is defined as:

Choices

Choice (4) Response

a.

A non -living particle containing genetic matter and covering of protein.

b.

A component of the vertebral column

c.

A preparation containing dead or weakened pathogens that when injected into the body elicit an immune response.

d.

Term applied to the lower side of the fish

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