what is the name of the four whorls of flower of Brassica and function of each. | web4study

what is the name of the four whorls of flower of Brassica and function of each.



WHORLS OF BRASSICA FLOWER:

The different parts of a typical flower e.g. Brassica, are called the whorls of a flower. They are as follows from outer to
the inner side.

(i) Calyx:

This is the outermost whorl and consists of fauna free sePals. Greenish in young flowers and yellowish later on.

FUNCTION OF CALYX: is to protect the inner parts of the flower from sunlight and rain.

(ii) Corolla:

is the second whorl and is composed of four free petals yellow in color.

FUNCTION OF COROLLA: is the attract butterflies and honey bees to help in pollination.

(iii) Androecium:

is the third whorl. It consists of six free stamens.

FUNCTION OF ANDROECIUM: It is the male reproductive part and produces numerous pollen grains.

(iv) Gynoecium:

It is the fourth and the innermost whorl and forms the female reproductive part of flower In brassica it is formed by the union of two carpels. Each carpel has an ovary.

FUNCTION OF GYNOECIUM: Ovary has many ovules the female reproductive parts. When pollen grains reach the stigma, they come to lower part ovary and unite with ovules. Thus fertilization takes place. Gynoecium ‘s produces seeds.


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