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What causes 'yawning'? What are the vari...

What causes 'yawning'? What are the various situations under which yawning occurs?

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LAKHMIR SINGH & MANJIT KAUR-RESPIRATION IN ORGANISMS -EXERCISE
  1. Draw a labelled diagram of human respiratory system.

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  2. What is meant by 'breathing'? Describe the mechanism of breathing in h...

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  3. What causes 'yawning'? What are the various situations under which yaw...

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  4. What happens to the breathing rate when a person is tried, bored, fee...

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  5. During heavy exercise, we get cramps in the legs due to the accumulati...

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  6. Normal range of breathing rate per minute in an average adult person a...

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  7. During inhalation, the diaphragm:

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  8. During exhalation, the rib cage:

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  9. In cockroaches, air enters the body through:

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  10. One of the following does not have gills for breathing. This one is:

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  11. Which of the following is not a part of the human respiratory system?

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  12. One of the following is not produced during the anaerobic respiration ...

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  13. As compared to inhaled air, the exhaled air contains more of : A. wa...

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  14. Which of the following has haemoglobin-containing blood ?

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  15. The energy of food which we eat is released slowly inisde our body by ...

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  16. Which of the following is not a product of aerobic respiration ?

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  17. yeast converts glucose into :

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  18. Which of the following are not the products of anaerobic respiration i...

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  19. During respiration in humans, the exchange of gases takes place in :

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  20. Which of the following does not have lungs for breathing ?

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