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NCERT Solutions for Class 7th Science

 

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Chapter 10. Respiration in Organisms

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Chapter Review:


  • The process of breakdown of food in the cell with the release of energy is called cellular respiration. 
  • The process of breakdown of food in the cell with the release of energy is called cellular respiration. 

  • Food can also be broken down , without using oxygen.This is called anaerobic respiration.

  • Some organisms such as yeast that can survive in the absence of air. they are called anaerobes.

  • Yeasts are used to make wine and beer.

  • The taking in of air rich in oxygen into the body is called inhalation

  • Giving out of air rich in carbon dioxide is known as exhalation. .

  • The number of times a person breathes in a minute is termed as the
    breathing rate.

  • An adult human being at rest breathes in and out 15–18 times in a minute.

  • Insects have a network of air tubes called tracheae.

  • Increased physical activity enhances the rate of breathing.

 

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