Q28 of 367 Page 47

What are the differences between aerobic and anaerobic respiration? Name some organisms that use anaerobic mode of respiration.























Aerobic Respiration



Anaerobic Respiration



Takes Place when oxygen is present.



Takes place when oxygen is not present.



Food gets broken down completely.



Food get broken down partially.



End products include carbon dioxide and water.



End products include ethanol and carbon dioxide (in yeast) and lactic acid (in animal muscles).



Produces lot of energy.



Produces less energy.




Some organisms that use anaerobic mode of respiration are Yeast and some bacteria.


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26

Fill in the following blanks with suitable words:

(a) The organs of respiration in man are the.................


(b) The actual exchange of gases takes place in the................of the lungs.


(c) ..................in the lungs provide a very large surface area for gaseous exchange.


(d) Yeast undergoes..............respiration whereas Amoeba undergoes..................respiration.


(e) Gills are the breathing organs in................

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Explain why, a land plant may die if its roots remain waterlogged for a long time.

 29

Name the final product/products obtained in the anaerobic respiration, if it takes place:

(a) in a plant (like yeast).


(b) in an animal tissue (like muscles).

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What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer.