Page 1 - 2. Structural organisation, Growth
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SAI International School
                                              Subject- Biology, Class-VI
                                        Topic-The Living and the Non-Living

                                    Subtopic- Structural Organisation, Growth
                                                     Lesson Notes



              Structural organisation:

                 •  All living organisms are made up of cells.
                 •  Cell divide further to form new cells.
                 •  A cell is the basic building block of all living organisms.
                 •  Living organisms are either unicellular or multicellular.
                 •  Organisms made up of only one cell are called unicellular organisms.
                     Example- Amoeba, paramecium, bacteria, etc.
                 •  Organisms made up of more than one cell are called multi cellular organisms. Example-
                     Man, dogs, mango tree, etc.

              Growth

                 •  All living organisms grow.
                 •  Growth is increase in size and volume of the body.
                 •  Living organisms grow and growth is the result of internal division of cells or increase in
                     the size of cells.
                 •  Animals stop growing after sometime. Their body however undergoes a series of
                     development and becomes mature.
                 •  Plants grow throughout their life.
                 •  Non-living things do not grow but may show increase in size or volume due to the
                     addition of material from outside.




              Wonder box

                         •  Robert Hooke discovered cell in 1665.
                         •  He is well known for his book Micrographia.
                         •  He coined the term - ‘CELL’.


















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