NSO Level 1- Science Olympiad (SOF) Class 8: Questions 190 - 194 of 1076

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Question number: 190

» Crop Production and Management

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Question

The advantage of using a seed drill for sowing seeds instead of traditional tools is

Choices

Choice (4) Response

a.

It ensures that the seeds are covered by soil which protect them from eating away by birds and insects.

b.

It saves time and labour

c.

It sows the seeds uniformly at proper distance and depth

d.

All a. , b. and c. are correct

Question number: 191

» Microorganisms

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Question

Raju has a powerful hand lens with him. He boasted that he has seen a microorganism with his hand lens. It may be a

Choices

Choice (4) Response

a.

Bacteria

b.

Protozoan

c.

Fungus

d.

Virus

Question number: 192

» Reproduction in Animals

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Question

The speciality of endocrine glands is

Choices

Choice (4) Response

a.

They are ductless glands

b.

They can be seen anywhere in the body

c.

They are large in size

d.

They do not secrete hormones.

Question number: 193

» Reproduction in Animals

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Question

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

Choices

Choice (4) Response

a.

Vocal cord become prominent and the voice becomes hoarse.

b.

Broadening of shoulders and widening of chest

c.

Appearance of hair in areas like underarms, face, hands and legs.

d.

All a. , b. and c. are correct

Question number: 194

» Conservation of Plants and Animals

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Question

In South African forests trees like yellow wood, fig, pine, the white stink wood etc, are seen. These trees can be referred by the term

Choices

Choice (4) Response

a.

Fauna of the area

b.

Ecology of the area

c.

Flora of the area

d.

Species of the area

Developed by: