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MCQ Questions for class 7 Science Respiration in Organisms

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Total Questions: 10

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Q1. The process of breakdown of food in the cell with the release of energy is called ______

  1. Cellular respiration
  2. Muscular respiration
  3. Respiration in organisms
  4. All of the above
Answer: Cellular respiration

Q2. When breakdown of glucose occurs with the presence oxygen it is called _____

  1. Cellular respiration
  2. Aerobic respiration
  3. Anaerobic respiration
  4. Muscular respiration
Answer: Aerobic respiration

Q3. When breakdown of glucose occurs without oxygen it is called _____

  1. Cellular respiration
  2. Aerobic respiration
  3. Anaerobic respiration
  4. Muscular respiration
Answer: Anaerobic respiration

Q4. The process of breathing in oxygen is called ______

  1. Breathing
  2. Inhalation
  3. Exhalation
  4. None of the above
Answer: Inhalation

Q5. The process of breathing out oxygen is called _____

  1. Breathing
  2. Inhalation
  3. Anaerobic respiration
  4. Exhalation
Answer: Exhalation

Q6. The number of times a person breath in air is called _____

  1. Cellular rate
  2. Heart rate
  3. Breathing rate
  4. Pulse rate
Answer: Breathing rate

Q7. In cockroaches, air enters the body through _____

  1. Nostrils
  2. Spiracles
  3. Mouth
  4. Skin
Answer: Spiracles

Q8. How do fish breath underwater?

  1. Using gills
  2. Using nose
  3. Using mouth
  4. None of the above
Answer: Using gills

Q9. How do whale and dolphin breath?

  1. Using lungs
  2. Using nostrils
  3. Using mouth
  4. All of the above
Answer: Using lungs

Q10. Which of the following gas do we inhale?

  1. Carbon dioxide
  2. Oxygen
  3. Methane
  4. Carbon monoxide
Answer: Oxygen

Q11. Which gas is released when we exhale?

  1. Carbon dioxide
  2. Oxygen
  3. Methane
  4. Carbon monoxide
Answer: Carbon dioxide

Q12. Which of the following can increase our breathing rate?

  1. Running for long time
  2. Heavy exercise
  3. Pushups
  4. All of the above
Answer: All of the above

Q13. Earthworm breathe oxygen through their ___________

  1. Moist Skin
  2. Mouth
  3. Nostrils
  4. All of the above
Answer: Moist Skin

Q14. The tiny pores of leaves that helps them respire

  1. Nose
  2. Mouth
  3. Stomata
  4. Lungs
Answer: Stomata

Q15. What is diaphragm?

  1. It is a muscular organ
  2. It moves downward upon inhalation
  3. It moves upward upon exhalation
  4. All of the above
Answer: All of the above

Q16. Skeletal structures surrounding chest cavity

  1. Rib cage
  2. Nasal cavity
  3. Lungs
  4. Heart
Answer: Rib cage