NSTSE (National Science Talent Search Exam- Unified Council) Class 8: Questions 1275 - 1279 of 2028

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Question number: 1275

» Biology » Food Production and Management

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MCQ▾

Question

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 number: 1276

» Biology » Food Production and Management

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MCQ▾

Question

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

Question number: 1277

» Biology » Food Production and Management

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Question

Fish cultivation is known as……. ?

Choices

Choice (4) Response

a.

Horticulture

b.

Pisciculture

c.

Sericulture

d.

Viticulture

Question number: 1278

» Biology » Food Production and Management

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Question

Correct sequence of steps to develop a new plant variety.

P – Selection

Q – Distribution to farmers

R – Creation of genetic variation

S – Evaluation and release as a variety

T – Seed multiplication

What will be the best sequence?

Choices

Choice (4) Response

a.

S, P, Q, T, R

b.

R, P, S, T, Q

c.

R, T, S, P, Q

d.

T, P, Q, S, R

Question number: 1279

» Biology » Cell

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MCQ▾

Question

Plasma membrane is:

Choices

Choice (4) Response

a.

Permeable

b.

Impermeable

c.

Semi-permeable

d.

Question does not provide sufficient data or is vague

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