CBSE Class-7 Science: Questions 189 - 195 of 322

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Question number: 189

» Reproduction in Plants » Modes of Reproduction » Vegetative Propagation

MCQ▾

Question

Which method of vegetative propagation used to grow hybrid varieties?

Choices

Choice (4) Response

a.

Tissue culture

b.

Grafting

c.

Cutting

d.

Layering

Question number: 190

» Transportation in Animals and Plants » Excretion in Animals » Excretory System in Humans

MCQ▾

Question

Sweating is the:

Choices

Choice (4) Response

a.

Regulates the body temperature

b.

Removal of water, mineral salts and oils

c.

Produces cooling

d.

All a. , b. and c. are correct

Question number: 191

» Soil » Properties of Soil » Percolation Rate of Water in Soil

MCQ▾

Question

Percolation rate of soil is the:

Choices

Choice (4) Response

a.

Equation

b.

The amount of water that soil can hold

c.

Amount of water that can pass through the soil

d.

Both a. and c. are correct

Question number: 192

» Transportation in Animals and Plants » Circulatory System » Blood Vessels

MCQ▾

Question

Thin walled vessel with wide lumen is called as:

Choices

Choice (4) Response

a.

Capillaries

b.

Veins

c.

Arteries

d.

Question does not provide sufficient data or is vague

Question number: 193

» Transportation in Animals and Plants » Circulatory System » Heart

MCQ▾

Question

Pumping organ of the human transport system is:

Choices

Choice (4) Response

a.

Ventricles

b.

Heart

c.

Auricles

d.

Question does not provide sufficient data or is vague

Question number: 194

» Soil » Soil Profile » Weathering

MCQ▾

Question

Process of formation of soil is called as:

Choices

Choice (4) Response

a.

Humus

b.

Bed Rocks

c.

Weathering

d.

Question does not provide sufficient data or is vague

Question number: 195

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

MCQ▾

Question

Air expands on heating and helps to:

Choices

Choice (4) Response

a.

Rise the hot air balloons up

b.

Feel cooler on a cloudy day

c.

Both a. and b. are correct

d.

None of the above

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