Page 37 - Science Class 06
P. 37

Plant Fibres                                          Geographical condi ons for co on plants:

              Plant  fibers  are  generally  composed  of            v Climate : Warm
              cellulose,  o en  in  combina on  with  other         v Temperature  :  Around  25°C  or  more  in
              components  such  as  lignin.  Examples                   summer.
              include co on, hemp, jute, flax, ramie, sisal,

              and  bagasse.  Plant  fibers  are  classified           v Rainfall : Moderate
              according to their source in plants.                  v Soil : Some soils are specially suited to
                                                                        co on  plants,  e.g.,  the  regur  or  black
              Bast or stem fibers, derived from the fibrous
                                                                        co on soils of the north-west deccan in
              bundles in the inner bark of plant stems.
                                                                        India.
              Leaf  fibers,  which  run  lengthwise  through

              the leaves of monocotyledonous plants.                                                            Cotton
              Seed-hair fibers, such as co on.                       AFGHANISTAN

              Co on
                                                                      P A K I S T A N
                                                                                                  CHINA
                                                                                                   TIBET
              Co on  is obtained from  the hairs  surroun-
              ding  the  seeds  of  the  plants  of  the                                      N E P A L
              gossypium  family.  The  fluffy  stuff  surroun-
                                                                                                                 Tr op  ic   of  C an  ce r
              ding the seeds is called co on.
                                                                                                                MYANMAR




                                                                      ARABIAN
                                                                       SEA
                                                                                                       BAY OF BENGAL







                                                                                         SRI                   ANDAMAN AND NICOBAR ISLANDS (INDIA)
                                                                        LAKSHADWEEP (INDIA)
                                                                                 I N D I A N   LANKA  O C E A N
                                                                                  Co on Producing States
                                                                    Jute

                           White fluffy material of                   Jute is known as the ‘Golden Fibre’ due to
                            co on plant is co on.
                                                                    its golden brown colour and its importance.
              Firstly,  co on  is  collected  and  separated        In  terms  of  usage,  produc on  and  global
              from  the  seeds  in  ginning  factories.  The        consump on,  jute  is  the  second  only  to
              machine  that  separate  co on  from  the             co on. It is the fibre used to make hessian
              seeds  is  called  gin.  Co on  is  then  packed      sacks and garden twine. Jute is environment
              into big bales and sent to tex le mills where         friendly  as  well  as  being  one  of  the  most
              it  is  cleaned  and  spun  into  threads  called     affordable  fibres;  jute  plants  are  easy  to
              yarn. Finally, yarn is woven into cloth.              grow, have a high yield per acre and unlike
                                                                    co on,  have  li le  need  for  pes cides  and


              Science-6                                                                                          37
   32   33   34   35   36   37   38   39   40   41   42