Practice test

Respiratory system - Test Set 2

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    During heavy exercise, breathing rate in an average adult person can increase up to _____ per minute.
    1. 15
    2. 20
    3. 25
    4. 30
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  2. Question 2

    Diaphragm is a means of contraception. It is fixed _____
    1. over cervix
    2. in the Fallopian tube
    3. in the uterus
    4. None of the above
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  3. Question 3

    Lungs are the primary organs _____
    1. digestion
    2. constipation
    3. perspiration
    4. respiration
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  4. Question 4

    The most abundant element found in the human body is _____
    1. iron
    2. sodium
    3. oxygen
    4. iodine
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  5. Question 5

    What cause dough (a mixture of flour, water, etc.) to rise when yeast is added to it?
    1. An increase in the temperature
    2. An increase in the amount of the substance
    3. An increase in he number of yeast cells
    4. Release of carbone dioxide gas
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  6. Question 6

    Most of the insects do respiratory activities.
    1. through their skin
    2. through their tracheal system
    3. through their lungs
    4. through their gills
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  7. Question 7

    Accumulation of which one of the following in the muscles of sprinters leads to cramp?
    1. Lactic acid
    2. Eithanol
    3. Pyruvic acid
    4. Glucose
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  8. Question 8

    Cockroach cannot survive in the water because its respiratory organ is—
    1. Gill
    2. Trachea
    3. Book lung
    4. Pulmonary sac
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  9. Question 9

    Among the following set of salient feature, which set does exclusively characteristic of mammals?
    1. Presence of sweat glands, hairs on skin and diphyodonts
    2. Presence of mammary glands, sweat glands and diaphragm
    3. Absence of mammary glands, sweat glands and diaphragm
    4. Presence of mammary glands, hairs on skin and diaphragm
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  10. Question 10

    The transport of oxygen by blood takes place with the help of—
    1. Erythrocytes
    2. Thrombocytes
    3. Lymphocytes
    4. Leucocytes
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  11. Question 11

    Air bladder in fish acts as—
    1. Accessory respiratory organ
    2. Hydrostatic organ
    3. Both accessory respiratory
    4. Primary respiratory organ
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  12. Question 12

    On the average, what percentage of human body has the element of oxygen?
    1. 65
    2. 25
    3. 10
    4. 5
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  13. Question 13

    The blood vessel supplying blood to the kidney is the—
    1. Renal artery
    2. Hepatic artery
    3. Pulmonary artery
    4. Parotid artery
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  14. Question 14

    Insufficient blood supply in human body is referred as—
    1. Ischemia
    2. Hyperemia
    3. Haemostasis
    4. Haemorrhage
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  15. Question 15

    The number of chambers in a human heart is—
    1. Four
    2. Two
    3. Three
    4. Five
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  16. Question 16

    For a healthy heart, one needs to take a balanced diet, adequate sleep and—
    1. Indulge in vigorous mental activities
    2. Play games like carrom, chess and cards
    3. Do right amount of physical exercise
    4. Do sedentary work
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  17. Question 17

    Respiration is—
    1. Oxidation
    2. Reduction
    3. Hydrolysis
    4. Amination
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  18. Question 18

    What is the approximate time required for a heart beat?
    1. 0.5 second
    2. 0.8 second
    3. 0.5 minute
    4. 1.0 minute
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  19. Question 19

    How many times does the heart beat approximately in a minute in humans?
    1. 25 times
    2. 30 times
    3. 72 times
    4. 96 times
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  20. Question 20

    Blood pressure is the pressure exerted by blood on the walls of—
    1. Heart
    2. Veins
    3. Arteries
    4. Capillaries
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