1st Year Biology Chapter 13 Gaseous Exchange MCQs Short Questions Notes

biology 11th notes Chapter 13

1. Which of the of followings is not respiratory surface of hydra:

 
 
 
 

2. Emphysema produces increased air way resistance:

 
 
 
 

3. The percentage of rubisco in the leave is:

 
 
 
 

4. Walls of the chest cavity are composed of:

 
 
 
 

5. Oxygen content of fresh air is about:

 
 
 
 

6. During photophosphorylation Rubisco acts as:

 
 
 
 

7. In respiratory properties the surface area should be large and moist:

 
 
 
 

8. Which of the following characteristics is not shown by the diving mammals during act of diving?

 
 
 
 

9. In the glottis the mucous membrane is stretched across into fibrous bands:

 
 
 
 

10. The structures with a diameter less than 1mm are:

 
 
 
 

11. Cancer is basically a malignant tumor. Which can:

 
 
 
 

12. The lungs are covered by a double membrane called:

 
 
 
 

13. The special pores involved in gaseous exchange:

 
 
 
 

14. The maximum capacity of 100 ml blood to absorb oxygen is:

 
 
 
 

15. Which of the following structures is present in birds but absent in mammals?

 
 
 
 

16. The tiny thin walled ducts present in the lungs of birds are called:

 
 
 
 

17. The passage of water current in fishes is:

 
 
 
 

18. In a hot and dry day level of which of the:

 
 
 
 

19. Which of followings is not the function of nasal cavity?

 
 
 
 

20. The significance of the photorespiration is:

 
 
 
 

21. The residual volume of the lungs is a volume:

 
 
 
 

22. During expiration air is given out when:

 
 
 
 

23. In the peroxisomes the glycolate is converted into:

 
 
 
 

24. Which of the followings is not respiration?

 
 
 
 

25. Which one is inhibited chemically, so that plant can still grow?

 
 
 
 

26. Which system of the cockroach is very specialized?

 
 
 
 

27. The hemoglobin can carry:

 
 
 
 

28. Water is denser than air:

 
 
 
 

29. Oxygen combines to haemoglobin with form:

 
 
 
 

30. Which of the following processes does not take place during expiration?

 
 
 
 

31. The respiratory activity during day time is called:

 
 
 
 

32. What maintains a step diffusion gradient?

 
 
 
 

33. Which of the following is irrelevant?

 
 
 
 

34. Lungs are covered with double layered thin membranous sacs called

 
 
 
 

35. The carbon dioxide transported in the form of carbonate ions is:

 
 
 
 

36. Glycine is the simplest amino acid:

 
 
 
 

37. Normally at rest we inhale and exhale howmany times per minute?

 
 
 
 

38. The exchange of gases is more rapid in air than the water due to:

 
 
 
 

39. Cancer is caused by metastasis which is a process where:

 
 
 
 

40. The venous blood in tissues has carbon dioxide:

 
 
 
 

41. The most abundant protein in world is:

 
 
 
 

42. The gases are transported in cockroach through:

 
 
 
 

43. When blood leaves the capillary bed most of the carbon dioxide is in the form of:

 
 
 
 

44. During photorespiration rubisco acts as:

 
 
 
 

45. The total lung capacity is:

 
 
 
 

46. The break down of alveoli is called:

 
 
 
 

47. Respiratory activity which occurs in plants during day time is called:

 
 
 
 

48. Tubernculosis:

 
 
 
 

49. Number of ATP produced during photorespiration is:

 
 
 
 

50. In countercurrent flow of blood and air:

 
 
 
 

51. During photosynthesis the rubisco acts as:

 
 
 
 

52. Which of the followings is not property of the respiratory surface of hydra:

 
 
 
 

53. Which of the following special structures is present in the respiratory system of man?

 
 
 
 

54. Which of the following structures is also called voice box?

 
 
 
 

55. During inspiration the air enters into the lungs:

 
 
 
 

56. In fling the pumps heart the blood directly to the.

 
 
 
 

57. The heart of the fish is single circuit and the blood flows in:

 
 
 
 

58. The wall of chest cavity is composed of:

 
 
 
 

59. Xylem and phloem are not involved:

 
 
 
 

60. The maximum capacity of the haemoglobin to absorb oxygen is:

 
 
 
 

61. In which of the following, reactions of photorespiration do not take place?

 
 
 
 

62. The respiratory system of the bird is more efficient than the mammals because:

 
 
 
 

63. The roots of the land plants get oxygen:

 
 
 
 

64. The sheet of skeletal muscles between abdominal and thoracic cavity is called:

 
 
 
 

65. Their functional unit of the lungs:

 
 
 
 

66. Which of the following factors decrease the oxygen saturation of haemoglobin?

 
 
 
 

67. Air enters into the body of cockroach through:

 
 
 
 

68. The lenticels are:

 
 
 
 

69. What percentage of carbon dioxide is carried as carboxy haemoglobin?

 
 
 
 

70. In which of the following processes ATP is produced?

 
 
 
 

71. Diffusion of oxygen in and Carbon dioxide out occurs when:

 
 
 
 

72. The floor of chest cavity called diaphragm composed of:

 
 
 
 

73. Which of the followings is unit of lungs?

 
 
 
 

74. The irritant substances of smoke generally cause:

 
 
 
 

75. Which of the followings is the property of the respiratory surface of animals?

 
 
 
 

76. One polypeptide chain with iron containing ring structure is myoglobin:

 
 
 
 

77. Myolglobin is Iron containing protein pigment present in:

 
 
 
 

78. During inspiration the diaphragm:

 
 
 
 

79. The haemoglobin can carry:

 
 
 
 

80. The main tracheal trunk in cockroach communicates with exterior by:

 
 
 
 

81. The respiratory organs in fishes are:

 
 
 
 

82. What are the main source of exchange of gases in plants?

 
 
 
 

83. Most of carbon dioxide is transported in the form of:

 
 
 
 

84. Lenticels are present in:

 
 
 
 

85. Which type of respiration takes place in frogs?

 
 
 
 

86. Number of stomata present on the leaves:

 
 
 
 

87. Photorespiration is an activity which:

 
 
 
 

88. Which of the followings is true about photorespiration?

 
 
 
 

89. Aquatic mammals:

 
 
 
 

90. The respiratory surface of the Cockroach is:

 
 
 
 

91. 70 percent carbondioxide:

 
 
 
 

92. Carbon dioxide:

 
 
 
 

93. The opening of the larynx is called:

 
 
 
 

94. Which step does not take place during cellular respiration?

 
 
 
 

95. Carbonic anhydrase is present in:

 
 
 
 

96. When RUBP reacts oxygen, two carbon compound is produced.

 
 
 
 

97. Hydra has no specialized for respiration.

 
 
 
 

98. During exercise the breathing rate may rise to:

 
 
 
 

99. The amount of oxygen in exhaled air is:

 
 
 
 

100. Asthma releases which of the following compounds?

 
 
 
 

101. From the spiracles air enters into trachea and then:

 
 
 
 

102. way flow of air in birds?

 
 
 
 

103. What is one of the most important metabolic activities of all organism?

 
 
 
 

104. Which one is much complex than hydra?

 
 
 
 

105. It is estimated that in number stomata peer square centimeter are is:

 
 
 
 

106. The process of inspiration takes place as:

 
 
 
 

107. The oxygen pressure in many of the cells is:

 
 
 
 

108. Lung capacity in an adult human:

 
 
 
 

109. Which of the following structures is not involved for the absorption of oxygen in cockroach?

 
 
 
 

110. Which is not true about the respiratory system of birds?

 
 
 
 

111. Cancer is basically malignant tumor:

 
 
 
 

112. Which type of respiration takes place through skin in frog?

 
 
 
 

113. The normal human blood is about:

 
 
 
 

114. Number of stomata per square centimeter of a leaf are:

 
 
 
 

115. Which of the followings is a condition of emphysema?

 
 
 
 

116. Which of the following compounds is not produced during photorespiration?

 
 
 
 

117. Exchange of gases during organismic respiration is carried out by:

 
 
 
 

118. Which of the following factors increases the carrying capacity of blood?

 
 
 
 

Short Questions

1. Define breathing?
2. Define pulmonary respiration?
3. Define respiratory surface. Give its properties.
4. Describe briefly as to how gaseous exchange takes place in plants?
5. Differentiate between bronchi and bronshioles.
6. Differentiate between inspiration (inhalation) and expiration (exhalation) ?
7. Differentiate between inspiration and expiration?
8. Differentiate between organismic and cellular respiration?
9. Differentiate between pulmonary and cutaneous respiration.
10. Enlist type of respiration in frog.
11. Give the composition of breath air in humans.
12. Give two properties of respiratory surfaces in animals.
13. How air is belter medium for respiration than water.
14. How aquatic plants obtain oxygen?
15. How Carboxyhaemoglobin is formed?
16. How does air always remain in the lungs of Human beings?
17. How does breathing differ from respiration?
18. How does respiration take place in earthworm?
19. How exhalation and inhalation do occur in cockroach?
20. How gills are ventilated in fish?
21. How glycolate is produced?
22. How land plants and aquatic plants get oxygen?
23. How lungs are connected to outside?
24. How most of the carbon dioxide is carried by blood?
25. How much CO₂ is present in venous and arterial blood?
26. How much denser is a water medium than air medium for exchange of respiratory gases?
27. How oxyhaemoglobin is formed?
28. How pH and temperature effect the capacity of heamoglobin to combine with oxygen
29. How rubisco decides to go which way i.e., either to act as oxygenase or carboxylase?
30. How skin is kept moist in earthworm?
31. How the rate of carbon dioxide fixation is lowered?
32. In a hot and dry day the level of oxygen inside the leaf rises. Why?
33. Into how many passage ways, the nasal cavity is divided?
34. It is observed that if photorespiration is inhibited chemically the plant can still grow. Then why photorespiration exists?
35. Name different parts of air passage way of man?
36. What are alveoli? Give their function.
37. What are blue babies?
38. What are gill slits?
39. What are lenticels?
40. What are parabronchi?
41. What are pleura?
42. What are respiratory surfaces?
43. What are spiracles? Give their functions.
44. What are the air sacs?
45. What are the functions of the nasal cavities?
46. What are the properties of respiratory surfaces?
47. What are tracheae?
48. What are tracheoles?
49. What are vocal cords?
50. What do you understand by counter current exchange?
51. What is asthma? Give its cause.
52. what is cancer or carcinoma?
53. What is cutaneous respiration?
54. What is diaphragm? In which group of animals it is found?
55. What is diving reflex?
56. What is emphysema?
57. What is glycine? How it is converted to serine?
58. What is inspiration?
59. What is larynx or voice box?
60. What is lungs cancer?
61. What is operculum?
62. What is photorespiration?
63. What is rate of breathing at rest and exercise?
64. What is rate of breathing in man during rest?
65. What is respiratory distress syndrome?
66. What is Rubisco?
67. What is rubisco? Give its functions.
68. What is the cause of tuberculosis?
69. What is the concentration of carbon dioxide in arterial and venous blood?
70. What is the difference between epiglottis and glottis?
71. What is the difference between photosynthesis and photorespiration?
72. What is the functional unit of lungs?
73. What is the need of respiration or gaseous exchange?
74. What is the respiratory pigment of human beings?
75. What is trachea or windpipe?
76. Why air is better respiratory medium?
77. Why are the disadvantages of water as respiratory medium in comparison with air?
78. Why lungs are spongy?
79. Why oxygen can be easily obtained from air as compared to water?
80. Write different ways of respiration in frog.
81. Write two properties of respiratory surfaces.

Long Questions

1. Differentiate between organismic and cellular respiration?
2. Why air is better respiratory medium than water
3. Differentiate between stomata and lenticels?
4. And also its products.
5. What is RUBISCO? Write its nature
6. Define respiratory surface. Give their properties in animals?
7. Name the parts of air passage way of man?
8. Write the functions of nasal cavity?
9. Differentiate between glottis and epiglottis?
10. what is larynx, pharymx and tracnea?
11. What is respiratory distress syndrome?
12. What is respiratory distress syndrome? What is the role of surfactant in
13. Differentiate between hemoglobin and myoglobin?
14. What is the function of carbonic anhydrase enzyme? Where it is present.
15. Write the factors that affect the capacity of haemoglobin to combine with oxygen?
16. Give % of CO₂, in arterial and venous blood?
17. Name and explain respiratory disorders?
18. Describe the lung capacity?
19. Compare composition of inhaled and exhaled air?
20. Write two adaptation in diving mammals?
21. What is diving reflex?
22. Differentiate between expiration and inspiration?

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