Page 58 - Practical handout Lev 1-Pharm D- 2024-2025-with spec
P. 58

Pharm D                                                Level 1                                            Medicinal plants (PG 101)






                   -Palisade may be present on


                 -one surface only (dorsiventral leaves) abutting the upper epidermis surface

                 Or

                 -abutting both surfaces (isobilateral leaves)

                   2-Vascular bundle:- may surrounded by batch of bundle sheath which may be ( parenchyma or fibers of pericycle )


                   They are formed of xylem strands towards upper surface surrounded by phloem towards

                   the lower surface & Protoxylem is directed towards the upper surface.




                                                                                                        Monocot Leaves
                                                                 monocot leaves


                                                                                                             Epidermis                                           Notes:-  (Ground Tissue)


                                                                                                              ybodermal layer                                    Mesophyll


                                                                                                             (scalerenchyma)

                                                                                                              round tissue                                       -It's homogenous tissue , as It's


                                                                                                             (parenchyma)                                        undifferentiated ,
                                                                                                                                                                 but formed of parenchyma containing
                                                                                                              undle sheath                                       chlorophyll


                                                                                                             (fibers)


                                                                                                              hloem                                              -(V.B)s are nearly equal , present on

                                                                                                             Metaxylem                                           lower surface , of closed collateral


                                                                                                              rotoxylem                                          type

                                                                                                              losed collateral                                   & surrounded by Sclerenchyma


                                                                                                              .  .                                               bundle sheath




                                                                                                                      38
   53   54   55   56   57   58   59   60   61   62   63