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

    Cockroach and other insects breathe through ____________  and trachea.

    Right Option : A
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    Question : 2

    Which of the following are correct ?

    (a) Cockroach and other insects breathe through spiracles and trachea.

    (b) Unicellular animals breathe through their cell membrane.

    Right Option : A
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    Question : 3

    In Cockroaches and other insects oxygen reaches to the cells directly through the _______________ by means of diffusion.

    Right Option : B
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