Question # 1

C-Shaped cartilaginous rings are present in the wall of.

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Bronchi

Bronchioles

Alveoli

Trachea

How many bronchi are there in the air passageway?

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One

Two

Many

None of these

What type of blood vessels surrounds the alveoli?

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Artery

Arteriole

Capillary

Vein

Which diisease is caused by Streptococcus pneumoniae:

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Bronchites

Emphysema

Pneumonia

Asthema

The structural and functional unit of lungs is:

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trachea

pharynx

broncioles

alveolus

How many pairs of ribs in humans?

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12

24

26

30

The process of gaseous exchange involves.

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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.

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

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Stomata

Lenticels

Companion cell

Guard cells

The glottis is guarded by a flap of tissue called:

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Trachia

Glottis

Bronchi

Epiglottis

In man the system of gaseous exchange is:

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digestive system

respiratory system

nervous system

excretory system

Which structure actively helps in taking the air out of lungs?

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Nasal cavity

Bronchus

Bronchiole

Diaphragm

No. of bronchi in the air passage way are:

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1

2

3

4

Main role to give out air form lungs is;

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Bronchus

Bronchi

Bronchiote

Diaphragm

A thick muscular layer beneath lungs is called:

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Kidney

Diaphragm

Bladder

Ureter

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