1. Cockroach cannot survive in the water because its respiratory organ is–
(C) Book lung
(D) Pulmonary sac
2. Among the following set of salient feature, which set does not exclusively characterise mammals?
(A) Presence of sweat glands, hairs on skin and diphyodonts
(B) Presence of mammary glands, sweat glands and diaphragm
(C) Absence of mammary glands, sweat glands and diaphragm
(D) Presence of mammary glands, hairs on skin and diaphragm
3. The transport of oxygen by blood takes place with the help of–
4. Air bladder in fish acts as–
(A) Accessory respiratory organ
(B) Hydrostatic organ
(C) Both accessory respiratory
(D) Primary respiratory organ
5. On the average, what percentage of human body has the element of oxygen?
(C) 10 (D) 5
6. Respiration process requires–
7. The blood vessel supplying blood to the kidney is the–
(A) Renal artery
(B) Hepatic artery
(C) Pulmonary artery
(D) Parotid artery
8. Insufficient blood supply in human body is referred as
9. The number of chambers in a human heart is–
10. For a healthy heart, one needs to take a balanced diet, adequate sleep and–
(A) Indulge in vigorous mental activities
(B) Play games like carrom, chess and cards
(C) Do right amount of physical exercise
(D) Do sedentary work
11. Respiration is–
12. What is the approximate time required for a heart beat?
(A) 0.5 second
(B) 0.8 second
(C) 0.5 minute
(D) 1.0 minute
13. How many times does the heart beat approximately in a minute in humans?
(A) 25 times
(B) 30 times
(C) 72 times
(D) 96 times
14. Blood pressure is the pressure exerted by blood on the walls of–
15. The human heart is enclosed in the–
16. Rheumatic heart disease is treated with the help of–
(C) Methyl dopamine
17. Mycoplasma is associated with a disease that affects the organs of–
18. The main function of white blood cells in the body is to–
(A) Carry oxygen
(B) Help in clot formation
(C) Produce more red cells
(D) Protect body against diseases
19. Lungs are the primary organs of _________.
20. Anaerobic respiration refers to which of the following?
(A) Respiration without Oxygen
(B) Respiration with Oxygen
(C) Respiration without CO2
(D) Respiration with CO2
21. Reserpine is used to:
(A) Reduce hight blood pressure
(B) Increase blood pressure when it is low
(C) Alleviate pain
(D) Cure arthritis
22. Which among the following living being has respiratory organ but does not have brain?
(C) Blood succor
23. ECG is used to detect the functioning of
24. Heart attack occur due to:
(A) Bacterial attack on the heart
(B) Stopping of heart beat
(C) Lack of blood supply to the heart itself
(D) Impairment of heart’s working due to
25. White lung disease is prevalent among the workers of:
(A) Paper industry
(B) Cement industry
(C) Cotton industry
(D) Pesticide industry
26. The membrane covering the lungs is a
27. Tobacco smoke is injurious to health because it contains:
(A) Carbon monoxide
(C) Polycyclic aromatic hydrocarbons
28. How many chambers does a mammalian heart have?
29. What accumulated in the muscles after continuous strenuous physical exercise as a result of temporary anaerobic respiration that causes muscular fatigue?
(B) Lactic acid
(C) Ethyl alcohol
(D) Carbon dioxide
30. Just born baby has the respiratory rate as
(A) 32 times/minute
(B) 26 times/minute
(C) 18 times/minute
(D) 15 times/minute
31. Muscle fatigue occurs due to accumulation of ______.
(C) Lactic Acid
(D) Carbonic Acid
32. During hibernation state, frog respires by which of the following?
(A) Only heart
(B) Only lungs
(C) Only skin
(D) Both lungs and skin
33. There are how many vocal cords in the human voice box?
34. Vocal chords in women are _______________ than vocal chords in men.
(A) 5mm shorter
(B) 15mm shorter
(C) 5mm longer
(D) 15mm longer
35. Alveoli is related to which of the following system of human body?
(A) Circulatory system
(B) Excretory system
(C) Reproductive system
(D) Respiratory system
36. In humans, the sound is produced by the ________.
37. The vocal cords in men are about _______ long.
(A) 10 mm
(B) 20 mm
(C) 30 mm
(D) 40 mm
38. In which of the following part of the cell does the pyruvic acid is broken down into carbon dioxide, water and energy?