Question

Draw a diagram of a flower and name the parts.

Answer 1

Hint: A flower is the main reproductive organ in flowering plants (angiosperms) and they ensure the continuity of several generations of the species. It has a complex structure having various whorls, with each whorl contributing to an important function.

Complete answer:
Given below is the well-labeled diagram of a complete flower:

 

A flower is considered to be complete if all of these parts are present, otherwise, it is known as an incomplete flower.
The flower can be divided into four main parts: petals, sepals, stamen, and carpel (also known as a pistil).
Sepals: The outermost whorl consisting of sepals is known as calyx.
These are the exterior parts of a flower meant for protecting the inner whorls, during the bud stage.
They are typically green in color.
Petals: These are the units of the second whorl i.e. the corolla.
They are bright in color and attractive. Their purpose is to attract insect pollinators.
Stamen: It is the male reproductive part of a flower. Each stamen can be divided into two parts: the anther and the filament. The filament is the long cylindrical tendril part of the stamen, while the anther is a sac that sits at the top of the filament.
The filament holds the anther, exposing it to the pollinators.
The pollen is produced at the anther.
Carpel: This is also known as the pistil; the female reproductive organ of the flower. It contains a sac-like structure known as the ovary which is responsible for the production of seeds (or ovules). The extension of the ovary is known as the style, a tube-like structure ending in a swollen sticky structure called the stigma. A fertilized ovary swells to protect the developing seeds and transforms the flower into a fruit.
Pedicel: This structure is responsible to hold individual flowers in place and also expose the flowers to the sun and wind.
Pollen tube: It is a tube produced when the pollen grains land on the stigma and finally germinate. This tube carries the male gametes into the ovary.
Receptacle: Also known as the ‘torus’, it is a thick part of the stem from which the flower emerges.

Note: The flowers which are pollinated by the wind are generally dull in color and generally don’t release a strong odor, unlike insect-pollinated flowers.
They have a long feathery and extra sticky stigma, to increase the chances of receiving the pollen carried by the wind.