Class 7 Biology Respiration in Organisms Breathing

Breathing

  • The process of respiration requires oxygen to break down food and convert it into energy along with the release of carbon-dioxide gas. For this purpose we need a medium for taking in oxygen and expelling out the carbon-dioxide. This purpose is solved by a process called breathing.
  • The process of taking in oxygen rich air and giving out air rich in carbon-dioxide is referred to as breathing. It is an endless process that continuesthroughout the lifeof a living organism.
  • The process of breathing is carried out fluently using the respiratory organs.
  • The process of breathing in oxygen rich air through the respiratory organ is called inhalation.
  • The process of breathing out carbon-dioxide rich air through the respiratory organ is called exhalation.
  • One breath equals to the composition of one inhalation and one exhalation. Number of times a person breathes in a minute is referred to as breathing rate.

Share these Notes with your friends  

< Prev Next >

You can check our 5-step learning process


.