Page 249 - Primary Six Notes
P. 249

4k
                                                ft      thri
                                                 «
                                              , z                                                    £9.
                                           3T                        m
                                           .               /    &
                                           \
                                                h- >                                 .*r:  *

                                         :J                                     i  ,              jÿri
                     *  ,          L       J                             i.          ||j||pl|ÿB                 -

                                                                                     >&
                     VJ         Tm                                    >          µ    '•    **  'flS  '
                         m*.*lev                                                 &     k M' m       - --T-:
                                   _
                                      r
                      *    \T      L                                              -~




                                                                                 •»



                                          H
                                                                           Explosive mechanism

                                                                           (self-dispersal)


                                                                           This method of disper-

                                                                           sal of fruits and seeds is
         <€A            j'           k                                     also called mechanical


                                                                           dispersion.


                                                                           Many fruits when ripe



                         T    1                                            split open with force
                       L      «   sk-JfcS         '\       4               and throw out the
                             41
                           *                                               seeds at the same dis-
                                                                1
                                                                           tance. Examples are

                 1G                                     ‘if         m      peas, beans, castor oil

                                                                           etc.


         /                      BkJ*                             i

         M         m »•                *--ÿk
                   F V

                                     »
                              rjrs>         _            *
   244   245   246   247   248   249   250   251   252   253   254