Question

Observe any one flower and its various parts and describe it in your own words.

Answer 1

They different parts of a flower are:

1. Androecium (male reproductive organ): The androecium consists of whorls of stamen. The stamen consists of the filament (long and slender stalk) and anther (bilobed structure). A typical anther is bilobed, which contains the pollen grains.
2. Gynoecium (female reproductive organ): Gynoecium represents the female reproductive part made up of carpels. Carpel is made up of:
   • Style − It connects stigma to the ovary.
   • Stigma − It acts as a receptacle for the pollen grains.
   • Ovary − It is the enlarged basal part on which style lies. Each ovary bears one or more ovules attached to cushion-like placenta. After fertilisation, ovules develop into seeds and ovary into fruit.
3. Calyx (accessory organ bearing sepals): Calyx refers to the sepals.They are green in colour. They protect the plant in bud stage and also attract the insects for pollination.
4. Corolla (accessory organ bearing petals): Corolla refers to the brightly coloured whorl of a flower. Individual unit of corolla is petals.Petals protect the inner essential organs (i.e., stamens and carpels) and attract pollinators since they are brightly coloured.