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Biology 10th Class English Medium Chapter 10 Online Test MCQs With Answers

Question # 1

A thick muscular layer beneath lungs is called:

Choose an answer

Kidney

Diaphragm

Bladder

Ureter

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Question # 2

For gaseous exchange the leaf and young stems have in their epidermis:

Choose an answer

Stomata

Lenticels

Companion cell

Guard cells

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Question # 3

How many bronchi are there in the air passageway?

Choose an answer

One

Two

Many

None of these

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Question # 4

In first stem of glycolysis glucose molecules breaks ans divide into two _______ molecules

Choose an answer

Citric acid

Lactic acid

Pyruvic acid

Formic acid

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Question # 5

The rate of breathing at rest in human is:

Choose an answer

16-20 times per minute

70-80times per minute

80-100times per minute

10 -20 times per minute

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Question # 6

In human and other higher animals, the exchange of gases is carried out by:

Choose an answer

Skin

Respiratory

Air passageway

Lungs

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Question # 7

In man the system of gaseous exchange is:

Choose an answer

digestive system

respiratory system

nervous system

excretory system

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Question # 8

The process of gaseous exchange involves.

Choose an answer

Break down of C-H bounds to yield energy.

Physical movements that take air ain and our of body

Getting oxygen from the air and removing carbon dioxide

Transport of oxygen by the blood to different parts of the body.

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Question # 9

What happens during Exhalation?

Choose an answer

Ribs muscles relax

Diaphragm become dome shaped

Pressure on lungs increased

All of these

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Question # 10

Which bring deoxygenated blood form heart into lungs?

Choose an answer

Pulmonary veins

Pulmonary Artery

Aorta

Wind Pipe

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Question # 11

A disease involving the breakdown of air sacs of the lungs is:

Choose an answer

Bronchitis

emphysemsa

pneumonia

asthma

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Question # 12

Percentage of CO₂ in exhaled are during breathing is:

Choose an answer

16%

79%

0.04%

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