Page 108 - Science Class 06
P. 108

A fruit has two parts— pericarp or fruit wall         epicarp. It is fleshy and edible layer.
              and  the  seed.  The  pericarp  is  developed
                                                                    For example, mango.
              from  the  wall  of  the  ovary.  Seeds  are

              developed  from  its  ovule.  The  pericarp
              consists of three layers.

              Epicarp : The outermost layer of the fruit is
              called epicarp which forms the skin of the
              fruit.

              Mesocarp  :  This  is  the  second  layer  a er                            Mango

                                                                    Endocarp : This is the innermost layer which
                                                                    encloses the seed of a fruit.



               Collect different types of flowers and name the parts that they contain. Write whether

               they are bisexual or unisexual.
                       Name of Flower                          Parts                    Bisexual/Unisexual












              Func ons of a Fruit                                   an  embryo.  The  embryo  has  an  outer
              v Fruits are the delicious parts of a plant           covering  called  cotyledons  which  protect
                  which  also  contain  many  vitamins  and         embryo  from  any  harm.  It  also  stores  food
                  fibres.                                            needed by the embryo to grow. The embryo
                                                                    consists of two parts—  plumule and radicle.
              v Fruits  protect  the  seeds  from  the

                  adverse clima c condi ons.                        Plumule : This part of seed grows into the
                                                                    shoot.
              v Fruits  help  in  the  dispersal  of  seeds.
                  Human  beings  as  well  as  animals  eat         Radicle : This part of seed grows into the
                  the  fruits  and  throw  their  seeds  away.      root. When a seed

                  These seeds again grow in the soil.               finds favourable       Cotyledon          Epicotyl
                                                                    condi ons of                               Radicle
                                 THE SEED
                                                                    water, oxygen and       Testa
              The  seed  in  a  plant  is  the  part  that  is      temperature, it                          Micropyle
              developed from the ovules a er fer lisa on.           grows into a baby
              They  are  enclosed  in  the  fruit  which  are       plant called seedling. A seedling grows into

              developed  from  the  fer lized  ovary.  Each         a plant with the passage of  me and bears
              seed has a baby plant inside it which is called       flower and fruits.


              108                                                                                           Science-6
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