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Define floral diagram. How we represent mother axis in a floral diagram?

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Floral diagram:

  • Diagrammatic respresenation of theoretical transverse section and ground plan of a floral bud in relation to the mother axis which lies at the posterior side is called floral diagram
  • It is highly illustrative and describes most of the features of the floral and its part like:
  • Symmetry
  • Regular or irregular
  • Sexuality
  • Number of the floral parts of each t) (sepals, petals etc)
  • Shows cohesion and adhesion of floral parts.
  • Aestivation, relation between different floral organs.
  • Numbers of anthers, monothecous or bithecous condition of anther
  • Number of carpels, number of locules and placentation of ovule in ovary.

  • Show mother axis by a dot. Mother Axis is the axis stem upon which the flowers are borne. When the flowers are borne laterally upon it, the side of the flower towards the mother axis (or precisely towards the apex of mother axis) is known as the posterior side while the side away from it (the side of the flower towards the bract when it is present) is called as the anterior side.
  • In a floral diagram the outer most whorl is of bracyeole then bract, calyx, wrolla, Androecium and invermost is gynoecium. To show cohession and adhesion of cohesive and adhesive members are comiected by a thin line. Mother axis is shown by a black spot (dot). Complete floral diagram is drawn on the basis of mother axis.

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