Page 220 - New Medley 4 Semester 1
P. 220

The midvein and side veins
                                                                                    have small tubes inside
                                                                                    them. These tubes are
                                                                                    called xylem and phloem.







                                                                                                 What do xylem
                                                                                                 and phloem do?


                          Xylem              Phloem










                  Xylem carries water from roots to
                  leaves and phloem carries food from
                  leaves to the other parts of a plant.


                Now, the teacher explains inside of a                                What does chlorophyll do?
                leaf as seen under a microscope.



























                 There are many layers of cells inside a leaf.
                 These cells have a green pigment called
                 chlorophyll. There are many small openings
                 on the lower surface of the leaf. They are                   Chlorophyll gives green colour
                 called stomata. Stomata are protected by                     to the leaves and helps plants
                 two guard cells.                                             in making food.


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