Question # 1

The percentage of oxygen from air which we inspired is:

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15 %

21%

25%

28%

How many pairs of ribs in humans?

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12

24

26

30

Stomata are present in:

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Phloem

Xylem

Endodermis

Epidermis

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

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Nasal cavity

Bronchus

Bronchiole

Diaphragm

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

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Bronchitis

emphysemsa

pneumonia

asthma

Which of the following is called voice box?

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Trachea

Larynx

Bronchi

Alveoli

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

Most of the gaseous exchange in a leaf occurs through:

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Stomata

General surface

Cuticle

Lenticels

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

Which diisease is caused by Streptococcus pneumoniae:

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Bronchites

Emphysema

Pneumonia

Asthema

The length of trachia is __________ cm approximately:

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10

12

14

16

When the "World no tobacco day" is celebrated?

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30 June

31 June

11 January

None of these

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