Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 472 - 477 of 518

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Question number: 472

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Question

MCQ▾

Development of more than two crops in a same field which is not in definite pattern is known as

Choices

Choice (4)Response

a.

Mixed cropping

b.

Single cropping

c.

Intercropping

d.

None of the above

Question number: 473

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Question

MCQ▾

A species whose population is decreasing continuously is known as

Choices

Choice (4)Response

a.

Endangered

b.

Extinct

c.

Rare

d.

None of the above

Question number: 474

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Question

MCQ▾

The ultimate source of energy on Earth is

Choices

Choice (4)Response

a.

Petroleum

b.

Solar energy

c.

Coal

d.

Fossil fuel

Question number: 475

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Question

MCQ▾

Which of the following is not referred as organic farming?

Choices

Choice (4)Response

a.

Chemical fertilizer

b.

Effluent of biogas

c.

Vermicomposting

d.

Introducing organisms which can feed on pests (biological control method)

Question number: 476

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Question

MCQ▾

Advantages of mining are

Choices

Choice (4)Response

a.

Establishment of facilities like hospitals, school, transportation etc.

b.

Stable economic condition of country

c.

Development

d.

All a. , b. and c. are correct

Question number: 477

Edit

Question

MCQ▾

Development of more than two crops in a same field in a definite pattern

Choices

Choice (4)Response

a.

Single cropping

b.

Intercropping

c.

Mixed cropping

d.

None of the above