Respiration in Animals Class 10

  • Animals have evolved different organs for the uptake of oxygen from the environment and for getting rid of the carbon dioxide produced in the body during respiration
  • Exchange of gasses in animals may occur through their skin or through specific respiratory organs.
  • These organs have structures that increase the surface area and are in contact with oxygen-rich atmosphere.
  • These organs work together and constitute the respiratory system of an organism.

Also Check- Importance Of Respiration

For efficient gaseous exchange, the respiratory surface should be

  • Thin-walled
  • Moist to speed up diffusions
  • Large surface area
  • Rich in blood supply 

Also Check- Respiration in Plants

Respiration In Aquatic Organisms

  • In aquatic organisms The rate of breathing is higher as compared to terrestrial organisms as these organisms utilize oxygen dissolved in water which is present in a lesser amount compared to others.
  • The aquatic organisms breathe more rapidly to accumulate more and more oxygen. 
  • Fishes take in water through their mouth and force it to pass into the gills where the dissolved oxygen is taken up by blood flowing in blood vessels.

Also Check – Respiration in Human Beings 

Respiration in Terrestrial Organisms

  • Terrestrial organisms use atmospheric oxygen for respiration
  • This oxygen is absorbed by different organs in different animals. 
  • All these organs have a structure that increases their surface area and are present in contact with the oxygen rich atmosphere.
  • The exchange of oxygen and carbon dioxide has to take place across this surface, the surface is very fine and delicate.
  • To protect this surface, it is usually placed within the body well-protected, so there have to be numerous passages that will take air to this area. 
  • There is a mechanism for moving air in and out of this area where the oxygen is absorbed. 

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