Question # 1

Rate of breathing depends upon concentration of which gas:

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

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

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Bronchi

Bronchioles

Alveoli

Trachea

Which gas us absorbed through stomata of plant during night?

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Carbon dioxide

Oxygen

Nitrigen

Hydrogen

Cutting of walls of Alveoli called:

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Pneumonia

Emphysema

Bronchtis

Asthama

In normal condition human respiration rate is:

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12 to 15 per minute

15 to 12 per minute

10 to 12 per minute

16 to 20 per minute

Cartilage is absent in:

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larynx

trachea

bronchi

bronchioles

The respiratory centre is present in :

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Lungs

Brain

Nose

Muscles

In man the system of gaseous exchange is:

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digestive system

respiratory system

nervous system

excretory system

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

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Bronchitis

emphysemsa

pneumonia

asthma

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

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Citric acid

Lactic acid

Pyruvic acid

Formic acid

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

During exercise or other hard physical works the breathing rate may increase up to.

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30-40 times per minute

50-60 times per minute

60-70 times per minute

70-80 times per minute

All the alveoli of one side unite to form:

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Lung

Kidney

Thorax

Chest Box

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