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What are the percentages of oxygen and c...

What are the percentages of oxygen and carbon dioxide :
in inhaled air ?

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LAKHMIR SINGH & MANJIT KAUR-RESPIRATION IN ORGANISMS -EXERCISE
  1. Which contains more carbon dioxide : inhaled air or exhaled air ?

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  2. Which contains less oxygen : inhaled air or exhaled air ?

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  3. What are the percentages of oxygen and carbon dioxide : in inhaled ...

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  4. What are the percentages of oxygen and carbon dioxide : in exhaled a...

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  5. Name the breathing organs in the human body.

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  6. In the lungs : (a) what substance is taken into the body ? (b) wha...

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  7. In the lungs : (a) what substance is taken into the body ? (b) wha...

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  8. Which gases are exchanged in your lungs ?

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  9. Where does the blood absorb oxygen in the human body ?

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  10. Name the red pigment in blood which carries oxygen in the human body ?

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  11. Name the opening in our body through which we inhale air.

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  12. Name one bad habit which can cause lung cancer.

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  13. Which group of animals have spiracles and tracheae for breathing and r...

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  14. What is the average breathing rate of a human adult at rest ?

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  15. Name the air-tubes of insects.

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  16. Name the small openings (holes) on the sides of the body of an insect.

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  17. Name the tiny pores on the surface of leaves of a plant through which...

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  18. Name any two parts of plant through which exchange of gases takes plac...

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  19. Which of the two can respire independently : plant parts or animal par...

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  20. From where do roots absorb air needed for respiration ?

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