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Which of the following is correct ? (i...

Which of the following is correct ?
(i)The diaphragm contracts - volume of chest cavity increased
(ii)The diaphragm contracts - volume of chest cavity decreased
(iii)The diaphragm expands - volume of chest cavity Increased
(iv)The diaphragm expands - volume of chest cavity decreased

A

i

B

I and ii

C

ii and iii

D

iv

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VGS PUBLICATION-BRILLIANT-RESPIRATION-EXERCISE
  1. We will find vocal cords in

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  2. Cluster of air sacs in lungs are called

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  3. Which of the following is correct ? (i)The diaphragm contracts - vol...

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  4. Respiration is a catabolic process because of

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  5. Energy is stored in

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  6. What happens if there is no epiglottis in human beings ?

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  7. Swallowing and breathing will not take place at once. How can you prov...

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  8. Write an experiment to illustrate the conduction of sugars by phloem.

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  9. How you can prove that carbondioxide is essential for plants?

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  10. How do you infer the presence of CO2 in respiration experiments ?

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  11. How can we show that heat is liberated during respiration

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  12. Explain the procedure you have adopted in your school to prove that he...

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  13. Heat is evolved during respiration. How can you prove it?

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  14. What gas was produced by combustion according to Lavoisier ?

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  15. What didi Lavoisier find out about air from the experiments ?

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  16. What conclusion can be drawn from Lavoisier's experiments ?

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  17. Which gas do you think is Lavoisier talking about when he says chalky ...

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  18. Which gas according to Lavoisier is respirable air ?

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  19. It is a common observation that our breath is warmer than the air arou...

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  20. What does this experiment indicate ?

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