Question # 1

Respiratory distress syndrome is common in

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Adults

Old age people

Prelature infants

All new borns

Lungs are covered by double layered thin membranous sacs called.

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Pleura

Larynx

Air sacs

Diaphragm

The respiratory system is most efficient in ______

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Man

Bird

Fish

Snake

How many molecule of oxygen can bind with a molecule of myoglobin.

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4

3

1

2

Air spaces between mesophyll cells of a leaf comprise ______ of the total volume

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20%

30%

40%

50%

Respiratory pigment present in muscle is called.

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Hemoglobin

Globulin

Myoglobin

Hemocyanin

Blood contains ______ oxygen per 100 ml of blood when haemoglobin is 98% saturated

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19.6 ml

18.6 ml

16.6 ml

17.6 ml

Emphysema is a disease caused by the breakdown of.

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Lungs

Bronchi

Alveoli

Trachea

Number of spiracles in cockroach is

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20 pairs

10 pairs

06 pairs

08 pairs

Oxygen content of fresh air are

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200 ml/litre

10 ml/ litre

100 ml / litre

150 ml / litre

During breathing no stale of air remains in the lungs of.

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Mammals

Amphibian

Birds

Sarracenia

The main site of exchange of gases iin plants are

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Cuticle

Lenticel

Stomata

Epidermis

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