Respiration in Terrestial Animals


 
 
Concept Explanation
 

Respiration in Terrestrial Animals

Respiration in Terrestrial Animals:

Terrestrial organisms use atmospheric oxygen for respiration, which is absorbed by different organs in different animals.

  • All these organs have a structure that increase the surface area and is in contact with the oxygen rich atmosphere.
  • Since, the exchange of oxygen and carbon dioxide has to take place across this surface, it is very fine and delicate. To protect this surface it is usually placed within the body wall – protected so there are numerous passages that will take air to numerous passages that will take air to this area.
  • Most mammals such as dogs, monkeys, horses, etc.  respire through special sac like spongy organs called  lungs. Tadpoles breathe through gills, though they  breathe through skin and lungs when they became frogs.

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    Sample Questions
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    Question : 1

    Which of the following are correct ?

    (a) Respiratory organs in animals have a structure that increase the surface area and is in contact with the oxygen rich atmosphere .

    (b) Tadpoles breathe through gills, though they breathe through skin and lungs when they became frogs.

    (c) The skin is the respiratory organ in animals like frogs and earthworms .

     

    Right Option : D
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    Question : 2

    Cockroach and other insects breathe through ____________  and trachea.

    Right Option : A
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    Question : 3

    Which of the following are correct ?

    (a) Terrestrial organisms use atmospheric oxygen for respiration, which is absorbed by different organs in different animals.

    (b) All the respiratory organs  in terrestrial organisms have a structure that decrease the surface area and is in contact with the oxygen rich atmosphere.

    Right Option : A
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