Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 47 - 52 of 399

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Question 47

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Question

MCQ▾

Identify the following figure?

Identify the figure

Identify the Figure

Loading Image

Choices

Choice (4)Response

a.

Levelling

b.

Ploughing

c.

Sowing

d.

Weeding

Question 48

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Question

MCQ▾

What will improve the quantity of food production?

Choices

Choice (4)Response

a.

Pesticides

b.

Use of modern biotechnology

c.

Major use of land for agriculture

d.

Synthetic fertilizer

Question 49

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Question

MCQ▾

Which are considered as modern technology in agriculture?

I. To obtain highest yield

II. To get the highest economic profit possible

III. To development of new crop varieties

IV. Increased worker safety

Find the correct statement/statement (s).

Choices

Choice (4)Response

a.

III and IV only

b.

I, II and III only

c.

II, III and IV only

d.

I, II, III and IV only

Question 50

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Question

MCQ▾

Undesirable plants that grow along with the crop are known as:

Choices

Choice (4)Response

a.

Weeding

b.

Harvester

c.

Sowing

d.

Winnowing

Question 51

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Question

MCQ▾

The process of conversion of atmospheric nitrogen into nitrogenous compounds and making it available for plants is called:

Choices

Choice (4)Response

a.

Nitrogen cycle

b.

Ammonification

c.

Nitrogen fixation

d.

Denitrification

Question 52

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Question

MCQ▾

Which of the following statement/statements is not true for chemical fertilizers?

I. Chemical fertilizer is an inorganic salt

II. Chemical fertilizer is prepared in factories

III. Chemical fertilizer provides humus to the soil and increases soil fertility

IV. Chemical fertilizers are very rich in plant nutrients like nitrogen, phosphorus and potassium

Find out the correct statement?

Choices

Choice (4)Response

a.

III only

b.

IV only

c.

I only

d.

I and II only