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SAI International School
                                             Subject- Biology, Class-VII
                                       Chapter- Respiration in Organisms
                                   Subtopic- How do Other Animals Breathe
                                                       Module- 16
                                                     Lesson Notes

               HOW DO OTHER ANIMALS BREATHE?

               Different animals, either microorganisms or higher animals, have different organs and
               mechanisms of breathing.


               Following are the different mechanisms of Respiration -

               1.  Respiration through skin

                      Organisms                         Organ                 Mechanism of respiration

                Unicellular organisms,           Body surface or outer       They take oxygen directly

                 like, Amoeba,Euglena            cell membrane               from the surroundings.
                 and paramecium.
                                                                             Oxygen and carbon dioxide
                                                                             diffuse in or out through the
                                                                             outer cell membrane or body
                                                                             surface.
                Earthworm and leech              Moist skin                  Skin helps in exchange of
                                                                             gases, which is also known
                                                                             as Cutaneous Respiration.























               Respiration in Earthworm                                   Respiration in Amoeba




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