7th Class Science Respiration in Organisms Question Bank

done Respiration in organisms Total Questions - 40

• question_answer1)
  Identify X in the given equation of aerobic respiration.
  A)
   Water                                  done clear
  B)
   Oxygen               done clear
  C)
   Ethyl alcohol done clear
  D)
          Nitrogen                             done clear
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• question_answer2)
  The following word equation shows a chemical process that take place in an organism Y. What is organism Y?
  A)
   Algae                    done clear
  B)
          Protozoan          done clear
  C)
          Yeast                    done clear
  D)
          Hydra done clear
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• question_answer3)
  What will happen when diaphragm relaxes and curves upwards?
  A)
   Air is forced out of the lungs. done clear
  B)
   The rib cage goes up and outward. done clear
  C)
   The volume of the thoracic cavity increases. done clear
  D)
   Air pressure inside the thoracic cavity decreases. done clear
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• question_answer4)
  The classification table given below shows how different organisms breathe. Which of these organisms are correctly represented by X, Y and Z?                                
  A)

  X	Y	Z
  Tadpole	Whale	Earthworm

                  done clear
  B)

  X	Y	Z
  Fish	Crocodile	Cockroach

                  done clear
  C)

  X	Y	Z
  Frog	Shark	Toad

                  done clear
  D)

  X	Y	Z
  Prawn	Grasshopper	Cockroach

  done clear
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• question_answer5)
  Gas P diffuses from a capillary into an alveolus in the lungs. When is gas P expelled out from the alveolus?
  A)
   During inhalation done clear
  B)
   During exhalation done clear
  C)
   During perspiration done clear
  D)
   During inspiration done clear
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• question_answer6)
  When we inhale, we breathe in air into the lungs. What do we breathe out when we exhale?
  A)
   Only oxygen gas. done clear
  B)
   Only hydrogen gas. done clear
  C)
   Air that has more oxygen than inhaled air. done clear
  D)
   Air that has more carbon dioxide than inhaled air. done clear
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• question_answer7)
  What is the function of the hair in the nose?
  A)
   To secrete mucus. done clear
  B)
   To trap dust particles. done clear
  C)
   To protect the mucus glands. done clear
  D)
   To prevent germs from entering the lungs. done clear
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• question_answer8)
  Identify the labelled parts P, Q and R in the figure given below.                
  A)

  P	Q	R
  Bronchus	Bronchiole	Alveolus

                  done clear
  B)

  P	Q	R
  Trachea	Alveolus	Bronchus

                  done clear
  C)

  P	Q	R
  Bronchus	Bronchiole	Diaphragm

                  done clear
  D)

  P	Q	R
  Trachea	Aiveolus	Diaphragm

  done clear
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• question_answer9)
                  Which of these are the organs of human respiratory system?
  A)
   Trachea                               done clear
  B)
   Bronchus            done clear
  C)
   Alveolus              done clear
  D)
          All of these done clear
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• question_answer10)
  What will happen when the thin rubber sheet is pushed upwards?
  A)
   Air is pulled in done clear
  B)
   Air is forced out done clear
  C)
   Air pressure in the bell jar increases done clear
  D)
   No change done clear
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• question_answer11)
  What will happen when the thin rubber sheet is pulled downwards as shown in figure given below?
  A)
   Nothing will happen. done clear
  B)
   The balloon will burst. done clear
  C)
   The balloon will be deflated. done clear
  D)
   The balloon will be inflated. done clear
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• question_answer12)
  What is the end product of glucose in the abscence of oxygen in muscle cells?
  A)
   Carbon dioxide done clear
  B)
   Lactic acid done clear
  C)
   Ethanol done clear
  D)
   Water done clear
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• question_answer13)
  Which of the following organisms respire through tracheal system?
  A)
   Earthworm        done clear
  B)
          Cockroach          done clear
  C)
          Fish                       done clear
  D)
          Frog done clear
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• question_answer14)
  Why do we get, muscle cramps after heavy exercise?
  A)
   It is due to the partial breakdown of glucose to produce lactic acid. done clear
  B)
   It is due to the complete breakdown of glucose to produce lactic acid. done clear
  C)
   It is due to the muscle cells that respire in the presence of oxygen. done clear
  D)
   It is due to the increased supply of oxygen to muscle cells. done clear
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• question_answer15)
  Which of the following statements is correct for anaerobic respiration?
  A)
   Food is broken down in the absence of oxygen to release energy. done clear
  B)
   Breakdown of food occurs in presence of oxygen. done clear
  C)
   It is a slow process compared to aerobic respiration. done clear
  D)
   It produces large amount of energy compared to aerobic respiration. done clear
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• question_answer16)
  Breathing involves inspiration and expiration process. Which of the following take place during inspiration?
  A)
   Ribs move downward and outward. done clear
  B)
   Ribs move upward and inward. done clear
  C)
   Ribs move downward and inward. done clear
  D)
   Ribs move upward and outward. done clear
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• question_answer17)
  Lime water turns milky due to the presence of which of the following gases?
  A)
   Carbon monoxide done clear
  B)
   Carbon dioxide done clear
  C)
   Nitrogen done clear
  D)
   Oxygen done clear
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• question_answer18)
  Which statement is correct?
  A)
   Exhaled air contains more oxygen and less carbon dioxide. done clear
  B)
   Exhaled air contains less oxygen and less carbon dioxide. done clear
  C)
   Inhaled air contains equal amount of carbon dioxide and oxygen. done clear
  D)
   Exhaled air contains more carbon dioxide and less oxygen. done clear
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• question_answer19)
  Which of these are parts of the human respiratory system?

  (i) Mouth

  (ii) Nostrils

  (iii) Gullet

  (iv) Windpipe

  (v) Lungs

  A)
    (ii) and (v) only done clear
  B)
    (ii), (iv) and (v) only done clear
  C)
    (i), (ii), (iv) and (v) only done clear
  D)
    All of the above done clear
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• question_answer20)
  What happens when we breathe in?

  (i) Size of our chest increases.

  (ii)  Size of our chest decreases.

  (iii) Carbon dioxide is removed from our body

  (iv) Air enters our lungs.

                 
  A)
   (i) and (iii) are correct done clear
  B)
   (i) and (iv) are correct done clear
  C)
   (ii) and (iii) are correct done clear
  D)
   (ii) and (iv) are correct done clear
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• question_answer21)
  Respiration is an example of which of the following processes?
  A)
   Anabolic                              done clear
  B)
   Catabolic             done clear
  C)
   Metabolic           done clear
  D)
          Both (A) and (C) done clear
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• question_answer22)
  Which of the following terms is also called anaerobic respiration?
  A)
   Fermentation    done clear
  B)
          Imbibition          done clear
  C)
          Transportation   done clear
  D)
          Osmosis done clear
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• question_answer23)
  What is the function of the stomata?
  A)
   To take in water done clear
  B)
   To trap sunlight done clear
  C)
   To take in gases done clear
  D)
   To give out food done clear
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• question_answer24)
  In which of the following processes gills are used for respiration?
  A)
   Cutaneous respiration done clear
  B)
   Branchial respiration done clear
  C)
   Terrestrial respiration done clear
  D)
   Pulmonary respiration done clear
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• question_answer25)
  Lenticels are found in which of the following parts of a plant?
  A)
   The stem in which secondary growth has taken place. done clear
  B)
   The root where secondary growth has not taken place. done clear
  C)
   The roots as well as the stem where secondary growth has occurred. done clear
  D)
   The leaves and roots. done clear
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• question_answer26)
  Which of the following prevent the entry of food into the trachea?
  A)
   Epiglottis             done clear
  B)
          Glottis  done clear
  C)
   Hard palate        done clear
  D)
          Soft palate         done clear
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• question_answer27)
  Earthworms respire through which of the following organs?
  A)
   Moist skin          done clear
  B)
          Ctenidia              done clear
  C)
          Clitellum             done clear
  D)
          Typhlosole         done clear
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• question_answer28)
  In which of the following habitats gills are used for respiration?
  A)
   Terrestrial respiration done clear
  B)
   Aquatic respiration done clear
  C)
   Pulmonary respiration done clear
  D)
   All types of respiration done clear
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• question_answer29)
  Which of these organisms have lungs as respiratory organs?
  A)
   Cockroaches done clear
  B)
          Earthworms      done clear
  C)
   Starfishes           done clear
  D)
          Rabbits done clear
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• question_answer30)
  What is the correct sequence for the air to exhaled out from the lungs?

  R - Bronchus

  S - Trachea

  T - Alveolus

  U - Bronchiole

  A)
   \[\text{S}\to \text{U}\to \text{R}\to \text{T}\] done clear
  B)
   \[\text{S}\to \text{R}\to \text{U}\to \text{T}\] done clear
  C)
   \[\text{T}\to \text{U}\to \text{R}\to \text{S}\] done clear
  D)
   \[\text{T}\to \text{R}\to \text{U}\to \text{S}\] done clear
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• question_answer31)
  Analysis of a sample of air gives the following details.

  Nitrogen	Oxygen	Carbon dioxide
  78.0%	16.4%	4.4%

  From which of the following sources the sample of air is most probably taken
  A)
   Dissolved air from pond water. done clear
  B)
   Fresh air from a field. done clear
  C)
   Exhaled air. done clear
  D)
   inhaled air. done clear
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• question_answer32)
  Which organism is described in the information given below?

  (i) Respire anaerobically

  (ii) Used to make wine

  (iii) Reproduce by budding

  A)
   Potato                                 done clear
  B)
   Grapes done clear
  C)
   Yeast                    done clear
  D)
          Mucor done clear
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• question_answer33)
  In anaerobic respiration, glucose is broken down into which of the following substances?
  A)
   Carbon dioxide and water.         done clear
  B)
   Carbon dioxide and oxygen. done clear
  C)
   Alcohol and carbon dioxide. done clear
  D)
   Alcohol and oxygen. done clear
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• question_answer34)
  Which of the following diagram correctly illustrates the passage of oxygen in the respiratory system?
  A)
   Nose \[\to \] Lungs \[\to \] Wind pipe \[\to \] Blood done clear
  B)
   Nose \[\to \] Blood \[\to \] Wind   pipe \[\to \] Lungs done clear
  C)
   Nose \[\to \]Blood \[\to \]Lungs \[\to \] Wind pipe done clear
  D)
   Nose \[\to \] Wind pipe \[\to \] Lungs \[\to \] Blood done clear
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• question_answer35)
  Which statement is NOT correct?
  A)
   Taking in of oxygen is inhalation. done clear
  B)
   Taking in of carbondioxide is inhalation. done clear
  C)
   Breathing rate is number of inhalation and exhalation in one minute. done clear
  D)
   Giving out of carbondioxide is exhalation. done clear
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• question_answer36)
  A Which of the following for me the floor of the chest cavity?
  A)
   Lungs                   done clear
  B)
          Membrane        done clear
  C)
          Diaphragm         done clear
  D)
          Pleura done clear
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• question_answer37)
  Which of the following labelled parts represent diaphragm in the given figure?
  A)
   P                            done clear
  B)
          Q                            done clear
  C)
   R                            done clear
  D)
          S done clear
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• question_answer38)
  Why do whales and dolphins often come upto the water surface?
  A)
   To swim done clear
  B)
   To get sufficient sunlight done clear
  C)
   To breathe done clear
  D)
   To get food done clear
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• question_answer39)
  Which of the following animals breathe through their skin and lungs?
  A)
   Fish                       done clear
  B)
          Frog                      done clear
  C)
          Snake                   done clear
  D)
          Earthworm        done clear
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• question_answer40)
  In fishes gills are the respiratory organs. Gills are projections of which of the following parts?
  A)
   Nostril                  done clear
  B)
          Alimentary canal done clear
  C)
          Skin                       done clear
  D)
          None of these done clear
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