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Science  Year 4  Unit 2 Humans                                 Date:


      PBD MODULE    2.1  Human Breathing Process                                     Textbook:   24 – 36
        LS 2.1.1  Identify the organs involved in the breathing process.

       1.  (a)  The  diagram  below  shows  the  organs  which  are  involved  in  the  breathing
               process of humans. Label the organs correctly.  LS 2.1.1    PL 1



                               Trachea        Lungs        Nose








          (i)



                                                                  (ii)




                                                                     (iii)











           (b)  Based on the diagram above, complete the following statements.      PL 1


               (i)   Humans have                           lungs.


               (ii)   The                        are the organs that carry out the exchange of
                     oxygen and carbon dioxide.


               (iii)  Air goes out and comes in through the                        .


               (iv)  The                         is the breathing tract in the human body.


               (v)   The trachea is connected to the right and left                    .




       PERFORMANCE LEVEL ( )  1    2     3     4     5     6


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 02 Unit 02 Genius PBD SCIENCE YR4.indd   8                                                   19/10/2022   4:57 PM
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