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.

PercolationRate=AmountofWaterPercolationTime

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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