Page 1 - 3. Movement, Nutrition, Respiration
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SAI International School
                                              Subject- Biology, Class-VI
                                        Topic-The Living and the Non-Living
                                   Subtopic- Movement, Nutrition, Respiration
                                                     Lesson Notes


               Movement:

                          •  Movement is an important feature of living organisms.
                          •  Movement could be external movement or internal movement.
                          •  This may or may not involve a change in the position of an organism.

                          •  Animals exhibit locomotion while plants show movement.
                          •  Animals can move from one place to another called locomotion.
                          •  Leaves  of plants  like  Mimosa  pudica  droop when  touched  it  is  an  external
                              movement.
                          •  Non-living things do not move on their own.



               Food and Nutrition:

                   •  All living organisms need food to survive.
                   •  Food gives them energy for growth, development and to perform day to day
                       activities.
                   •  Plants are autotrophs and can prepare their own food by photosynthesis.
                   •  Animals are heterotrophs and depend on other plants and animals for
                       their nutrition.
                   •  Non-living things do not need or eat food.

               Respiration:

                   •  The food we eat reacts with oxygen of the air we breathe in to release energy. This
                       process is called respiration.
                   •  The energy is utilised by the living organisms for doing various activities.

                   •  Organs of breathing-
                          ❖  Land animals breathe through nostrils.
                          ❖  Aquatic animals breathe through gills.
                          ❖  Insects breathe through spiracles.
                          ❖   Earthworm breathes through their moist skin.
                   •  Plants too respire.

                   •  Exchange of gases occurs through stomata.
                   •  During respiration, the plants take in oxygen and give out carbon dioxide.
                   •  During photosynthesis, plants take in carbon dioxide and give out oxygen.
                   •  During daytime, the rate of photosynthesis is higher than the rate of respiration.
                   •  Roots and older stems breathe through minute holes called lenticels.


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