Structure and Function Of Flower

Structure and Function Of Flower:

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:

Tubular:

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

Campanulate:

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

Infundibulum:

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

Pappus:

• 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.

Corolla:

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

Petals:

• 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:

• 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:

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

Carpel:

• 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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