Structure and Function Of Flower

Structure and Function Of Flower:


  • Flowers are the reproductive part of flower plants.
  • The flower is highly modified shoot responsible for the production of seed and fruit.
  • The root stem and leaves are the different organ of the plant and the flower is meant for
  • Flowers may produce individually on the plant, or they may develop together in any.

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Structure of Flowers:

  • A flower is basically made up of four concentric rings of structures or floral leaves.
  • Andorecium
  • Calyx
  • Gynoecium
  • Corolla
  • Arranged on Thalamus.


Cohesion of Sepals:

  • The Sepals may be united to each other partially or completely or free from one another.
  • According to cohesion the calyx may be:
  • Polysepalous:
  • When these are free from each other . if we pull a sepal, the other are not pulled along with itGamosepalous:
  • When sepals are combined to each other. If we will drag a sepal, all will be pull the flower expend.foe example in Rosa.

Shape of Calyx:

  • The fusion of sepals results in various shapes of the corolla. Such as:


  • The sepals are merg to form a tube-like makeup, e.g.; in Verbena.


  • Shape of a calyx become a Bell-shaped, in Petunia alba.


  • Sepals unite to form and become funnel-like.
  • Sepal unite and it become like of funnel.


  • The sepals are greatly compact and are represented by hairs forming a shape. In Sunflower


Color of Sepals:

  1. The sepals are green usually, but in some cases they may be colored like petals.

Such sepals are called Petaloid.


  • It is the second ring of flower inside to calyx.
  • It comprises of colored floral leaves the Petals.
  • Petals are together called corolla.


  • The petals may be set in single whorl or many whorl.
  • When petals are free from one another known as
  • When all or few petals are united known as gamopetalous.

Shape of Corolla:

They may be occurs in many different shapes;

  • Clawed
  • Cruciform
  • Bilabiate
  • Tubular

Position and Color of petals:


  • Their position may be inferior and may be superior according to their position on thalamus.

Structure and Function Of Flower is also discuses their.


  • Androecium is the first of two reproductive whorls of flower present next to corolla of flower.
  • They comprises the stamen of flower.
  • Stamen:
  • Each stamen consists of filament, stalk, and also bilobed structure at the top of the filaments of flower.
  • Anther:
  • Anther lobes are joined with each other through a tissue.
  • They are also with joined with pollens.
  • These stamens are also called


Number and length of stamens:

  • Androecium may comprise of only two or more stamens of each flower.
  • All these are present free from each other because of its length.
  • The stamens of flower may be the same length.
  • There may vary with relation to each other with flower.
  • Stamens may be short or long in size.

Position of  the stamens on Thalamus:

  • Stamens are inserted below the level of ovary this condition is called the
  • When the stamens are inserted above the level of ovary this condition is known as the



  • Gynoecium is inner most whorl of flower consisting of the carpels.
  • This occupies the center of thalamus usually this is called a


  • A carpels are considerd to be a modified folded leaf of the plants.
  • two margin of the leaf fuse together of each plant.
  • fused margin is usually called ventral suture of plant.
  • the line related the midrib of leaf is maybe called the dorsal suture.


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131 thoughts on “Structure and Function Of Flower”


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