Flower - Parts And Functions

A plant is a living organism which has different parts like root, stem, leaves, and flower. Among them, the flower is the most attractive part of a plant owing to its beauty and smell. Flowers make the nature colorful and pleasant. We use it for various purposes such as for decorations, to symbolize our culture, emotions etc. Moreover, the flower is the reproductive unit of a plant.

Parts Of A Flower

Flower - Parts And Functions

Flower serves a significant function in plants. As the reproductive part, it ensures the continuance of a species of plant by the process called reproduction. Flowers are not only a part of reproduction but also a source of food for other living creatures. It is a rich source of nectar.

Flowers can either be complete or incomplete. Complete flower consists of:

  • Petals: This is the brightly colored part which attracts bees, insects, and birds. Colour of petals varies from plant to plant; some are bright while some are pale colored. Thus, petals help us to differentiate one flower from another.
  • Sepals: Sepal is the green colored part beneath the petals to protect rising budsSome flowers have fused petals-sepals but some have separated petals-sepals.
  • StamenThis is the male reproductive organ and consists of two parts namely: anther and filament which are usually yellow. Anther is a sac that produces and stores pollen whereas filament supports the anther.
  • Pistil: This is the innermost part of the flowers. The female reproductive organ of a flower comprises of three parts – stigma, style, and ovary which are collectively known as pistil. Stigma is the top most part; style is the long tube which connects stigma to the ovary. The ovary has lots of ovules. It is the part of the plant where the seed formation takes place.

In different plants, the number of petals, sepals, stamens and pistils can vary. Also, all these parts might not present in all plants. Based on this, we can decide whether a flower is complete or incomplete. Depending on the  parts present, flowers are either a male or a female or both.

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Practise This Question

How many plants in the list given below have marginal placentation? 

mustard, gram, tulip, Asparagus, arhar, sunn hemp, chilli, colchicine, onion, moong, pea, tobacco, lupin