Question # 1

The number of lobes in right lung is:

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1

2

3

4

All the alveoli of one side unite to form:

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Lung

Kidney

Thorax

Chest Box

In man the system of gaseous exchange is:

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digestive system

respiratory system

nervous system

excretory system

Amount of carbon dioxide in inspired air is:

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16%

0.04%

4%

None of these

The length of trachia is __________ cm approximately:

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10

12

14

16

Amount of nitrogen in expired air is:

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70%

80%

79%

4%

Which bring deoxygenated blood form heart into lungs?

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Pulmonary veins

Pulmonary Artery

Aorta

Wind Pipe

The rate of breathing at rest in human is:

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16-20 times per minute

70-80times per minute

80-100times per minute

10 -20 times per minute

The normal breathing rate in buman being is:

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10-40 times per minute

16-20 times per minute

30-40 times per minute

None of these

Stomata are present in:

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Phloem

Xylem

Endodermis

Epidermis

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

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Skin

Respiratory

Air passageway

Lungs

Point out the FALSE statement about respiration.

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Gases can easily pass through the walls of the alveoli

Gas exchange in lungs is very efficient because lungs provide large surface area

In emphysema, the walls of alveoli break and there is more surface area.

Dust particles can damage the lung by irritating the inner alveoli surface.

In wood seems and roots the gaseous:

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lenticels

epidermal cells

somata

micropyle

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