CBSE Class-7 Science: Questions 159 - 165 of 322

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Question number: 159

» Reproduction in Plants » Modes of Reproduction » Vegetative Propagation

MCQ▾

Question

Method of vegetative propagation used in plants like grapes, jasmine and bougainvillea is:

Choices

Choice (4) Response

a.

Tissue culture

b.

Layering

c.

Cutting

d.

Question does not provide sufficient data or is vague

Question number: 160

» Reproduction in Plants » Modes of Reproduction » Vegetative Propagation

MCQ▾

Question

Artificial methods of vegetative propagation are:

Choices

Choice (4) Response

a.

Grafting

b.

Layering and tissue culture

c.

Cutting

d.

All a. , b. and c. are correct

Question number: 161

» Soil » Soil Types » Loamy Soil

MCQ▾

Question

Soil best for agriculture is:

Choices

Choice (4) Response

a.

Clayey soil

b.

Loamy soil

c.

Sandy soil

d.

Question does not provide sufficient data or is vague

Question number: 162

» Soil » Soil and Crops » Soil Erosion

MCQ▾

Question

Which type of farming on hill sides reduces the soil erosion?

Choices

Choice (4) Response

a.

Preventing overgrazing

b.

Terrace farming

c.

Soil cover

d.

Question does not provide sufficient data or is vague

Question number: 163

» Soil » Properties of Soil » Absorption of Water by Soil

MCQ▾

Question

Which soil absorbs the water very quickly?

Choices

Choice (4) Response

a.

Sandy soil

b.

Clayey soil

c.

Loamy soil

d.

All of the above

Question number: 164

» Transportation in Animals and Plants » Circulatory System » Blood

MCQ▾

Question

Which type of blood cells are of the carrier of oxygen?

Choices

Choice (4) Response

a.

Red blood cells

b.

Platelets

c.

White blood cells

d.

All of the above

Question number: 165

» Winds, Storms and Cyclones » Air Expands on Heating » Properties of Hot Air

MCQ▾

Question

Which property of the hot air makes it wet and cloudy?

Choices

Choice (4) Response

a.

Hot air is less dense

b.

Hot air is less heavy

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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