Question # 1

In which of the following gaseous exchange occur through stomata?

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The leaves and young stems

Wood stems and nature roots.

Young roots

The aquatic plants

What percentage of oxygen inhaled form air during breathing?

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21%

22%

23%

24%

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

Which gas us absorbed through stomata of plant during night?

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Carbon dioxide

Oxygen

Nitrigen

Hydrogen

The primary chemical stimulus for breathing is the concentration of.

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Carbon dioxide in blood.

Oxygen in blood

Carbon oxide in muscles

Oxygen in muscles.

Rate of breathing depends upon concentration of which gas:

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

Which bring deoxygenated blood form heart into lungs?

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Pulmonary veins

Pulmonary Artery

Aorta

Wind Pipe

The correct list of respiratory disorders is;

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Asthma, emphysema. pneumonia , bronchitis

Asthma , penumonia , heamophlia , typhoid,

Asthma , blood , cancer , emphysema, cholera

Asthma , cholera, emphysema , malaria

In man the system of gaseous exchange is:

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digestive system

respiratory system

nervous system

excretory system

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

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Stomata

Lenticels

Companion cell

Guard cells

In which of the following disease, the patient has usually lost 50% to 70% of his/her lung tissue when symptoms appears?

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Pneumonia

Asthma

Emphy sema

Bronchitis

In plants, gaseous exchange takes place as:

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CO2 is removed and O2 is absorbed

CO2 is absorbed and O2 is removed

CO2 and O2 both are absorbed

CO2 and O2 both are removed

The number of lobes in right lung is:

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1

2

3

4

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