Page 1 - 2. Lesson Notes- The Leaf, Functions and modifications of leaves
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SAI International School
                                           Subject - Biology, class-VI
                                              Topic- The plant world
                      Subtopic- The Leaf, Functions and modifications of leaves
                                                     Module- 18
                                                   Lesson Notes

                 The leaf

                     The leaf is responsible for the process of photosynthesis in plants.

                     Leaves differ in shape and size.





















                                                       PARTS OF A LEAF


                     The flat broad part of the leaf is called the LEAF LAMINA.

                     The lamina is attached to the stem by the stalk called the PETIOLE of the


                       leaf.

                     There is a thick MID RIB with VEINS arising from it. They are responsible for


                       the transfer of water and mineral salts in the leaf.

                     The veins are arranged in a specific pattern on a leaf. This arrangement of the


                       veins on a leaf is called venation.



                     There are two types of venation- reticulate venation and parallel venation.


















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                                  PARALLEL VENATION          RETICULATE VENATION
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