NSO Level 1- Science Olympiad (SOF) Class 8: Questions 219 - 225 of 1076

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Question number: 219

» Reproduction in Animals

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MCQ▾

Question

Pick out the changes happening in girls during the stage of adolescence.

Choices

Choice (4) Response

a.

The ovary enlarges and start producing eggs.

b.

Sudden increase in height and weight.

c.

The region below waist becomes wider.

d.

All a. , b. and c. are correct

Question number: 220

» Crop Production and Management

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MCQ▾

Question

A versatile machine designed for reaping, threshing and winnowing is called a

Choices

Choice (4) Response

a.

Combine harvester

b.

Tractor

c.

Harvester

d.

Thresher

Question number: 221

» Reproduction in Animals

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MCQ▾

Question

Protruding voice box in boys during puberty is called

Choices

Choice (4) Response

a.

Adam’s apple

b.

larynx

c.

Speaker

d.

All of the above

Question number: 222

» Microorganisms

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MCQ▾

Question

Which of the following is not a traditional food preservative?

Choices

Choice (4) Response

a.

Vinegar

b.

Salt

c.

Jiggery

d.

Sugar

Question number: 223

» Crop Production and Management

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MCQ▾

Question

Farmers leave the field fallow in between two crops. This is to

Choices

Choice (4) Response

a.

Improve the growth of microorganism in the soil

b.

Retain the moisture of the soil

c.

Substitute the lost nutrients in the soil

d.

Question does not provide sufficient data or is vague

Question number: 224

» Conservation of Plants and Animals

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MCQ▾

Question

A group of similar type of interbreeding individuals is called a

Choices

Choice (4) Response

a.

Family

b.

Genus

c.

Species

d.

Fauna

Question number: 225

» Crop Production and Management

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MCQ▾

Question

The bacteria present in root nodules are called nitrogen fixing bacteria because

Choices

Choice (4) Response

a.

They utilise the nitrogen present in the nodules.

b.

They convert the humus in the soil to nitrogen.

c.

They help to fix the atmospheric nitrogen in the nodules.

d.

They produce nitrogen in the nodules.

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