NSO Level 1- Science Olympiad (SOF) Class 8: Questions 246 - 251 of 1076

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Question number: 246

» Crop Production and Management

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Question

Direction: Select the correct explanation of the statement given in question from the following sets

Grains must be dried well before storing.

  1. Grains are the favourite food of birds, insects and rodents.

  2. Drying makes the grains hard.

  3. It is difficult for insects to eat dry grains.

  4. Moisture makes the grains soft.

Choices

Choice (4) Response

a.

1 and 2

b.

3 and 4

c.

2 and 3

d.

1 and 3

Question number: 247

» Conservation of Plants and Animals

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Question

Areas meant for the conservation of biodiversity are called

Choices

Choice (4) Response

a.

Reserved forests

b.

National parks

c.

Reservoirs

d.

Biosphere reserves

Question number: 248

» Reproduction in Animals

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Question

Diabetics is caused by the decrease in production of this hormone

Choices

Choice (4) Response

a.

Thyroxin

b.

Adrenalin

c.

Insulin

d.

None of the above

Question number: 249

» Microorganisms

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Question

Dengue virus is carried by this mosquito

Choices

Choice (4) Response

a.

Female Qulux mosquito

b.

Female aedes

c.

Female anopheles

d.

None of the above

Question number: 250

» Crop Production and Management

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MCQ▾

Question

The terms moat, dhekhli and rahat are used in

Choices

Choice (4) Response

a.

Traditional methods of storing

b.

Traditional methods of weeding

c.

Traditional methods of ploughing

d.

Traditional methods of irrigation

Question number: 251

» Conservation of Plants and Animals

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MCQ▾

Question

The adverse effect of deforestation is

Choices

Choice (4) Response

a.

Increasing temperature and pollution level

b.

Increasing level of carbon dioxide

c.

Decreasing level of ground water

d.

All a. , b. and c. are correct

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