9th Class Science Sample Paper Sample Paper - 3 Term - 1

  • question_answer
      (a) What is cork? Mention its uses. (b) How many types of elements are present in xylem?


      (a) As root and stem grow older and increase in girth, peripheral tissue of root and stem become cork, cork cells are dead and do not have any intercellular spaces. Cork is protective in function. It is used for manufacture of sports goods, linoleum and for insulation.                                                                          (1/2)+(1/2) (b) It consists of four types of elements (i) Tracheids (ii) Vessels or Trachea (iii) Xylem parenchyma (iv) Xylem fibres                                                                                                                                                                              

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