10th Group A students- Discussion forum for the lesson Cell division

Cell division

Cell division

by bagtec2018566 H.M.P.S. Darmadasa -
Number of replies: 0

CELL DIVISION

           The process of division of exiting cell to form a two new daughter cells is known as cell division.

CELL DIVISION TYPES

           1. Mitosis

          2. Meiosis

Cell division is necessary for following reasons:

  1. Growth of Organisms
  2. Maintenance of Chromosome Number
  3. Maintenance of Nucleo -cytoplasmic Ratio
  4. Repair
  5. Reproduction in Unicellular organisms
  6. Healing and regeneration
  7. Genetic variations
  8. Formation of gamete by meiosis.

IMPORTANCE OF CELL DIVISION

                    1) Cell Reproduction.    


                                      Production of and offspring from a parent cell or a combination of parent cell.


                                          i. Asexual reproduction.

                                         ii. Sexual reproduction.

                   2) cell growth


                                          organism grow either by augmenting cell size or increasing in cell number.while a multicellular organism is in its early stages of development,cell divide at accelerated rates to increase the size of the organism.cell continue to divide to increase organism size until the organism reaches adulthood.


                     3)Cell repair.


                                    i. Normal replacement

                                    ii. Maintenance.