Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 25 - 28 of 399

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Question number: 25

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Question

MCQ▾

Who is called as the body’s building blocks?

Choices

Choice (4)Response

a.

Carbohydrates

b.

Fat

c.

Protein

d.

Water

Question number: 26

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Question

MCQ▾

The advantage of ploughing is:

I. It retains moisture for a longer period

II. It exposes soil pests natural predators

III. It helps in uprooting the weeds

IV. It provides good aeration to the roots

Find the correct statement/statement (s).

Choices

Choice (4)Response

a.

I and II only

b.

I, II, III and IV only

c.

II and III only

d.

II, III and IV only

Question number: 27

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Question

MCQ▾

The use of machinery in agriculture helps to:

I. Get the job done faster

II. Tasks which are too heavy or too delicate for human muscles to do can be done easily

III. Reduce the dependency on human and animal labour

IV. Human Muscles Relieved.

Find out the correct statements.

Choices

Choice (4)Response

a.

I, II and III only

b.

I, II, III and IV only

c.

I, II and IV only

d.

I and II only

Question number: 28

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Question

MCQ▾

Which are the sources of agricultural productivity?

I. Fertilizer

II. Irrigation

III. Genetic engineering

IV. Pesticides

Find the correct statement/statement (s).

Choices

Choice (4)Response

a.

I, II, III and IV only

b.

IV only

c.

II, III and IV only

d.

I and II only