NSO Level 1- Science Olympiad (SOF) Class 8: Questions 300 - 304 of 1076

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Question number: 300

» Conservation of Plants and Animals

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MCQ▾

Question

The term used for growing more and more trees is

Choices

Choice (4) Response

a.

Desertification

b.

Reforestation

c.

Afforestation

d.

Deforestation

Question number: 301

» Crop Production and Management

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MCQ▾

Question

The irrigation system shown in Figure is useful in

The irrigation system

The Irrigation System

The irrigation system

Choices

Choice (4) Response

a.

Orchards

b.

Trees that need less quantity of water

c.

Places where there is scarcity of water

d.

All a. , b. and c. are correct

Question number: 302

» Microorganisms

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MCQ▾

Question

Tetra packing is used as a preservative method in which of the following food items?

Choices

Choice (4) Response

a.

Milk and milk products

b.

Cereals and pulses

c.

Chips and snacks

d.

Meat and fish

Question number: 303

» Crop Production and Management

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MCQ▾

Question

What is the effect of using chemical pesticides on these insects?

Choices

Choice (4) Response

a.

Pesticides do not harm these insects.

b.

Pesticides kill pests as well as predators.

c.

Pesticides improve the growth of predators.

d.

None of the above

Question number: 304

» Crop Production and Management

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MCQ▾

Question

Direction: Observe the picture carefully and answer the questions

Image of the insects

Image of the Insects

Image of the insects

These insects are considered as farmer’s friends because

  1. They are predators of pests.

  2. They feed on the pests that destroy the crops.

  3. They help the farmer in agricultural practices.

  4. Farmers believe that the presence of these insects bring good luck.

Choices

Choice (4) Response

a.

1 and 4

b.

2 and 3

c.

1 and 2

d.

3 and 4

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