Question # 1

The normally human blood absorbs the amount of oxygen at sea level is about

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200 ml/100 ml of blood

20 ml/100 ml of blood

19.6 ml/100 ml of blood

02 ml/100 ml of blood

A liter of H2O contains ml of oxygen.

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10

20

30

40

Number of spiracles in cockroach is

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20 pairs

10 pairs

06 pairs

08 pairs

The main site of exchange of gases iin plants are

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Cuticle

Lenticel

Stomata

Epidermis

How much air can lungs when they are fully inflated

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5 liters

4 liters

3.5 liters

4.5 liters

During exercise the breathing rate may rise to

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30 times per minute

20 times per minute

25 times per minute

35 times per minute

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 muscles is called ______

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Myoglobin

Globin

Haemoglobin

Haemocyanin

Raspatory activity which occurs in plants during day time is called.

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Respiration

Transpiration

Photorespiration

Cutaneous respiration

Respiratory pigment present in muscle is called.

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Hemoglobin

Globulin

Myoglobin

Hemocyanin

The main tracheal trunk in cockroach communicates with exterior by

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100 pairs

10 pairs

8 pairs

4 pairs

Spiracles are found in

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Fish

Cockroach

Leech

Earth worm

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Biology Fsc Part 1 Chapter 13 Online Test MCQs With Answers

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