Question # 1

Total chemicals in tobacco smoke are:

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1000

2000

3000

4000

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

Cutting of walls of Alveoli called:

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Pneumonia

Emphysema

Bronchtis

Asthama

The inflamation of bronchi or bronchioles is caled:

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Bronchites

Emphysema

Pneumonia

Chest box

The major cause of lungs cancer is:

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nicotine

smoking

viral infection

radiation

Rate of breathing depends upon concentration of which gas:

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

Power of speaking is only gifted to:

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Human being

Monkey

Parrot

Crow

The glottis is guarded by a flap of tissue called:

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Trachia

Glottis

Bronchi

Epiglottis

Which bring deoxygenated blood form heart into lungs?

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Pulmonary veins

Pulmonary Artery

Aorta

Wind Pipe

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.

Where does the gaseous exchange occur in humans?

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Pharynx

Trachea

Bronchi

Alveoli

The muscles of ribs are called;

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Smooth muscles

Cardiac muscles

Intercoastal muscles

Coastal muscles

Most of the gaseous exchange in a leaf occurs through.

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Stomata

General surface

Cuticle

lenticels

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