Page 33 - SCIENCE 2
P. 33

4.  Oxygen

                          Plants keep the air fresh.

                          Plants  provide  oxygen

                         which is needed for living

                         organisms to breathe.

                          Oxygen  is  also  needed


                         for burning      .

                    5.  Medicine

                          Some plants give us medicines. Eucalyptus, Aloe Vera, garlic, Amla,

                          cinchona, neem, tulsi and serpentina  are some medicinal plants.

                          Tulsi leaves are used to cure cold and cough.














                                   Amla                 Mint              Neem              Aloe vera             Tulsi

                    6.  Wood

                          Some plants such as teak, pine, neem, sal, walnut etc., give us wood.

                          Wood is used to make wooden houses, furniture, doors and windows.

                          Plants also give us wood for fuel.













                                                                                                          Almirah
                                                                           Chair
                                  Wooden house

                          Wood from some trees is also used

                          for making boats and carts.

                                                                                                     Boat
   28   29   30   31   32   33   34   35   36   37   38