First Year Biology Mcqs with Answers Chapter 13 | Class 11 Biology Mcq with Answers pdf  chapter wise test

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First Year Biology Mcqs with Answers Chapter 1

Chapter 13

Gases Exchange

Encircle the most appropriate answer from the following options

1.         Which of the following is irrelevant?

  1. Breathing        
  2. Ventilation
  3. Organismic respiration
  4. Cellular respiration

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

  1. Breathing        
  2. Ventilation
  3. Organismic respiration
  4. Cellular respiration

3.         Lenticels are present in choose one:

  1. Leaves
  2. Roots
  3. Bark   
  4. Stem

4.         Number of stomata per square centimeter of a leaf are choose one:

  1. 10,000
  2. 12,000
  3. 14,000
  4. 16,000

5.         The respiratory activity during day time is called choose one:

  1. Organismic respiration
  2. Cellular respiration
  3. Photophosphorylation        
  4. None of above

6.         During photophosphorylation Rubisco acts as choose one:

  1. Carboxylase   
  2. Dehydrogenase
  3. Oxygenase    
  4. None of above

7.         The percentage of rubisco in the leave is choose one:

  1. 10%
  2. 20%
  3. 30%
  4. 40%

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

  1. Serine 
  2. Glycine
  3. Glucose         
  4. Glycolate

9.         Number of ATP produced during photorespiration is choose one:

  1. 36       
  2. 26
  3. 16       
  4. None the above

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

  1. Thin epithelium           
  2. Ventilation
  3. Capillary network       
  4. All the above

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

  1. Tracheae        
  2. Skin
  3. Spiracles        
  4. Tracheoles

12.       Air enters into the body of cockroach through choose one:

  1. Tracheae        
  2. Skin
  3. Spiracles       
  4. Tracheoles

13.       The respiratory organs in fishes are choose one:

  1. Lungs 
  2. Air sac
  3. Gills   
  4. Tracheae

14.       Which type of respiration takes place in frogs?

  1. Cutaneous      
  2. Buccal
  3. Pulmonary     
  4. All of above

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

  1. Bronchi           
  2. Parabronchi
  3. Alveoli
  4. Bronchi

16.       Which of the following structures is responsible for one-way flow of air in birds?

  1. Bronchi           
  2. Air sac
  3. Alveoli
  4. Bronchi

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

  1. Nose   
  2. Pharynx
  3. Larynx           
  4. Tracheae

18.       The structures with a diameter less than Imm are choose one:

  1. Bronchioles  
  2. Bronchi
  3. Alveoli
  4. Air sac

19.       The sheet of skeletal muscles between abdominal and thoracic cavity is called choose one:

  1. Pleura 
  2. Diaphragm
  3. Air sac
  4. Alveoli

20.       Which of the followings is unit of lungs?

  1. Bronchioles    
  2. Bronchi
  3. Alveoli
  4. Air sac

21.       The maximum capacity of 100 ml blood to absorb oxygen is choose one:

  1. 10 ml  
  2. 20 ml
  3. 30 ml  
  4. 40 ml

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

  1. CO2    
  2. Temperature
  3. pH of blood    
  4. All the above

23.       The carbon dioxide transported in the form of carbonate ions is choose one:

  1. 30%    
  2. 50%
  3. 70%    
  4. 90%

24.       Asthma releases which of the following compounds?

  1. Epinephrine    
  2. Histamine
  3. Heparin          
  4. Antibodies

25.       The break down of alveoli is called choose one:

  1. Tuberculosis   
  2. Asthma
  3. Emphysema  
  4. Cancer

26.       The amount of oxygen in exhaled air is choose one:

  1. 12%
  2. 14%
  3. 16%
  4. 18%

27.       The total lung capacity is choose one:

  1. 3 liters 
  2. 5 liters
  3. 7 liters 
  4. 9 liters

28.       Which of the followings is not respiration?

  1. Exchange of gases    
  2. Break down of glucose
  3. Formation of glucose          
  4. Release of energy

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

  1. Exchange of gases  
  2. Break down of glucose
  3. Formation of glucose 
  4. Release of energy

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

  1. Presence of water in liquid form but air in gases form
  2. The rate of diffusion is high in air than the water
  3. Air block the movement of oxygen and carbon dioxide
  4. None of the above

31.       It is estimated that in number stomata peer square centimeter are is choose one:

  1. 10,000
  2. 12,000
  3. 15,000
  4. 20,000

32.       The lenticels are choose one:   

  1. Special cells present in the stem
  2. Special cells present in the leaves
  3. Special pores present in the stem
  4. Special pores present in the leaves

33.       Photorespiration is an activity which choose one:

  1. Takes place in the presence of light
  2. Takes place in dark
  3. Can take place both in light and dark
  4. None of the above

34.       During photorespiration rubisco acts as choose one:

  1. Carboxylase   
  2. Oxygenase
  3. Hydrogenase 
  4. Dehydrogenases

35.       During photosynthesis the rubisco acts as choose one:

  1. Carboxylase 
  2. Oxygenase
  3. Hydrogenase 
  4. Dehydrogenases

36.       The most abundant protein in world is choose one:

  1. Haemoglobin  
  2. Rubisco
  3. Fiber   
  4. Egg protein

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

  1. Chloroplast     
  2. Mitochondria
  3. Peroxisome    
  4. Cytoplasm

38.       Which of the followings is true about photorespiration?

  1. It produces ATP
  2. It uses ATP
  3. It neither produce nor use ATP
  4. None of the above

39.       The significance of the photorespiration is choose one:

  1. It produces energy     
  2. It produces glucose
  3. It destroy glucose       
  4. It has no significance for plant

40.       Which of the followings is not property of the respiratory surface of hydra choose one:

  1. Large surface and moisture   
  2. Thick epithelium
  3. Gradient of gases      
  4. Capillary network

41.       Which of the of followings is not respiratory surface of hydra choose one:

  1. Ectodermal cells        
  2. Endodermal cells
  3. Mesoglea      
  4. All the above

42.       The respiratory surface of the Cockroach is choose one:

  1. Trachea          
  2. Tracheoles
  3. Spirachles      
  4. Fluid filled ducts

43.       The gases are transported in cockroach through choose one:

  1. Blood  
  2. Trachea
  3. Spiracles        
  4. None of above

44.       The respiratory surface of the fishes is choose one:

  1. Gill     
  2. Gill slits
  3. Lungs 
  4. None of abc

45.       The passage of water current in fishes is choose one:

  1. Mouth-pharynx-gill-gill slits
  2. Gill slits-gill-pharynx-mouth
  3. Pharynx-gill-mouth-gill slits
  4. None of the above

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

  1. Cutaneous respiration        
  2. Buccal respiration
  3. Pulmonary respiration
  4. None of the above

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

  1. It is composed of lung
  2. Lungs are composed of alveoli
  3. Lungs have air sac     
  4. Lungs have one way flow of gases

48.       In countercurrent flow of blood and air choose one:

  1. The direction of flow of blood and air is in the same direction
  2. The direction of flow of blood and air is in the opposite direction
  3. The direction of flow of blood and air is in the both directions
  4. None of the above

49.       The respiratory system of the bird is more efficient than the mammals because choose one:

  1. It have air sacs           
  2. It has one way flow of gases
  3. It does not have alveoli          
  4. It has countercurrent flow

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

  1. Moisten the air         
  2. Warm or cool the air
  3. Exchange of some gases
  4. Removing dust particles

51.       The opening of the larynx is called choose one:

  1. Epiglottis         
  2. Glottis
  3. Gullet  
  4. Vocal sac

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

  1. Lung   
  2. Trachea
  3. Bronchi           
  4. Parabronchi

53.       The wall of chest cavity is composed of choose one:

  1. Ribs    
  2. Intercostal muscles
  3. Both A and B
  4. Diaphragm

54.       The lungs are covered by a double membrane called choose one:

  1. Pleura
  2. Diaphragm
  3. Intercostal muscles    
  4. None of the above

55.       The process of inspiration takes place as choose one:

  1. The lungs pull air inside
  2. Passive contraction of lungs takes place
  3. Passive expansion of lungs takes place
  4. Air is pushed inside

56.       During inspiration the diaphragm choose one:

  1. Contracts      
  2. Relaxes
  3. Contracts and relaxes
  4. None of the above

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

  1. The intercostals muscles are relaxed
  2. The ribs are relaxed
  3. The muscles of the diaphragm relaxed
  4. The lungs are also relaxed

58.       The maximum capacity of the haemoglobin to absorb oxygen is choose one:

  1. 19.6 ml / 100 ml blood
  2. 20 ml /100ml blood
  3. 22 ml/ 100 ml of blood           
  4. 25 ml/ 100 ml blood

59.       The oxygen pressure in many of the cells is choose one:

  1. 40 mm Hg      
  2. 50 mm Hg
  3. 60 mm Hg      
  4. None of above

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

  1. High concentration of carbon dioxide
  2. High concentration of oxygen
  3. High temperature
  4. Low pH

61.       Most of carbon dioxide is transported in the form of

  1. Carboxyhaemoglobin
  2. With plasma protems
  3. Bicarbonate ion       
  4. In dissolved form

 62.      The venous blood in tissues has carbon dioxide choose one:

  1. 50 ml/ 100ml of blood
  2. 54ml/100ml of blood
  3. 45ml/100ml of blood  
  4. 35/ml/100ml of blood

63.       Cancer is caused by metastasis which is a process where choose one:

  1. One cell controls the activities of the others
  2. One cell transfers its activities to the others
  3. One cell destroys the other cells
  4. One cell transfers germs to another cell

64.       Cancer is basically a malignant tumor. Which can choose one:

  1. Control the other cells
  2. Spread in all the body
  3. Remains in specific place      
  4. All of the above

65.       An inflammatory substance released during the attack of asthma is choose one:

  1. Mycobacterium        
  2. Salmonella
  3. Clostridium     
  4. Azobactor

66.       An inflammatory substance released during the attack of asthma is choose one:

  1. Interferon       
  2. Complement proteins
  3. Histamine      
  4. Acetylcholine

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

  1. Breakdown of the blood capillaries in lungs
  2. Breakdown of the alveoli in the lungs
  3. Breakdown of pleura of the lungs
  4. None of the above

68.       The haemoglobin can carry choose one:

  1. One molecule of oxygen
  2. Two molecules of oxygen
  3. Three molecules of oxygen   
  4. Four molecule of oxygen

69.       The hemoglobin can carry choose one:

  1. One molecule of oxygen     
  2. Two molecules of oxygen
  3. Three molecules of oxygen   
  4. Four molecule of oxygen

70.       The residual volume of the lungs is a volume choose one:

  1. Which is a maximum amount always present in the lungs
  2. Which is a minimum amount always present in the lung
  3. Which is a variable volume, keep on changing
  4. None of the above

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

  1. They have twice volume of blood
  2. Their rate of heart beat slow down
  3. The consumption of energy is increased
  4. Most of the blood go to heart and brain

72.       Water is denser than air choose one:

  1. 8000 times     
  2. 800 times
  3. 80,000 times  
  4. 1800 times

73.       Xylem and phloem are not involved choose one:

  1. In transport of liquids  
  2. In transport of minerals
  3. In transport of gases           
  4. In transport of water

74.       In the peroxisomes the glycolate is converted into choose one:

  1. Serine 
  2. CO2
  3. Ethanolamine 
  4. Glycine

75.       The main tracheal trunk in cockroach communicates with exterior by choose one:

  1. 8 pairs
  2. 4 pairs
  3. 10 pairs         
  4. 100 pairs

76.       The heart of the fish is single circuit and the blood flows in choose one:

  1. One and two directions          
  2. Two directions
  3. Reverse direction       
  4. One direction

77.       Walls of the chest cavity are composed of choose one:

  1. Intercostal muscle      
  2. Ribs, intercostal muscles and diaphragm
  3. Ribs and intercostal muscle           
  4. Ribs

78.       The normal human blood is about choose one:

  1. 02 ml / 100 ml of blood          
  2. 200 ml / 100 ml of blood
  3. 20 ml / 100 ml of blood        
  4. 19.6 ml / 100 ml of blood

79.       When blood leaves the capillary bed most of the carbon dioxide is in the form of choose one:

  1. Hydroxyl ions 
  2. Carbonate ions
  3. Hydrogen ions
  4. Bicarbonate ions

80.       The irritant substances of smoke generally cause choose one:

  1. Smokers yawning      
  2. Smoker’s hiccough
  3. Smoker’s cough       
  4. Smoker’s sneeze

81.       During exercise the breathing rate may rise to choose one:

  1. 30 times per minutes           
  2. 35 times per minutes.
  3. 20 times per minutes 
  4. 25 times per minute

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

  1. Respiration   
  2. Photorespiration
  3. Respiratory    
  4. Earthwarm

83.       Exchange of gases during organismic respiration is carried out by  choose one:

  1. Oxygen
  2. Glycolate
  3. Tracheole
  4. Diffusion

84.       Oxygen content of fresh air is about  choose one:

  1. 200 ml/lit        
  2. 100 ml/lit
  3. 300 ml/lit         
  4. 400 ml/lit

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

  1. Stomata         
  2. Tracheole
  3. Respiratory    
  4. RBC

86.       The special pores involved in gaseous exchange choose one:

  1. Lenticels       
  2. Stomata
  3. Earthworm     
  4. Ventilation

87.       Respiratory activity which occurs in plants during day time is called choose one:

  1. Respiratory    
  2. Oxyhaemoglobin
  3. Photorespiration
  4. Oxyhaemoglobin

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

  1. Glycolate       
  2. Oxyhaemoglobin
  3. Ventilation      
  4. Earthwarm

89.       In a hot and dry day level of which of the choose one:

  1. Glycolate       
  2. Organ
  3. Ventilation      
  4. Oxygen

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

  1. Photorespiration         
  2. Photo synthesis
  3. Oxyhemoglobin         
  4. Respiration

91.       What maintains a step diffusion gradient?

  1. Ventilation    
  2. Parabronchi
  3. Oxyhemoglobi
  4. Organ

92.       Hydra has no specialized for respiration.

  1. Pumps
  2. Parabronchi
  3. Glycolate        
  4. Organ

93.       Which one is much complex than hydra?

  1. Sponge           
  2. Glycolate
  3. Amoeba         
  4. Earthwarm

94.       Oxygen combines to haemoglobin with form choose one:

  1. Respiratory    
  2. Oxygen
  3. Oxyhemoglobin       
  4. Organ

95.       Which system of the cockroach is very specialized?

  1. Digestive        
  2. Photo respiration
  3. Respiratory   
  4. None of the

96.       From the spiracles air enters into trachea and then choose one:

  1. Bronchiolar     
  2. Tracheoles
  3. Both A & B     
  4. None of the above

97.       In fiing the pumps heart the blood directly to the.

  1. RBC   
  2. Parabronchi
  3. Pleura 
  4. gills

98.       The tiny thin walled ducts present in the lungs of birds are called choose one:

  1. Oxyhemoglobin         
  2. Pleura
  3. Parabronchi  
  4. Earthwarm

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

  1. Oxyhemoglobin         
  2. Pleura
  3. Glycolate        
  4. Earthwarm

100.    Carbonic anhydrase is present in choose one:

  1. RBC   
  2. Parabronchi
  3. Pleura 
  4. None of the above

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