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2.  Respiration through Air holes

                  An insect leads a very active life and needshigher amount of oxygen.

                       Organisms                         Organ                      Mechanism of
                                                                                     Respiration
               Cockroach and                 Air tubes called trachea        They have a tracheal
               Grasshopper                   open through small              system running all along
                                             openings called spiracles.      their body which provides
                                                                             them with sufficient
                                                                             oxygen.

                                                                             Exchange of gases takes
                                                                             place by trachea which
                                                                             are air tubes with small
                                                                             openings called spiracles.














































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