Name: Puberty, Menstruation and Menopause
Uploaded: 2019-07-19
Duration: 3 min 34 s
Description: What is puberty? What is menstruation, and why does menstruation occur in females in a 28-day cycle? What is menopause? Learn all this by watching this video.

Question

Draw a labelled diagram of vertical section of a flower and explain its various parts.

Accepted Answer

Flowers are the reproductive part of a plant. These are not only involved in reproduction but are also a source of food for other living organisms. These are rich sources of nectar. Flowers are either be incomplete and complete.

A complete flower consists of sepals, petals, stamens and pistil. On the contrary, an incomplete flower lacks one or more of these structures.

A complete flower consists of two distinct parts:

Vegetative parts

Reproductive parts

Let us have a detailed look at the various parts of a flower.

Vegetative parts of a Flower:

The vegetative part of a flower consists of the following:

Sepals: These are the green-coloured part underneath the petals to protect growing buds.

Petals: These are the bright-coloured part that attracts insects, bees and birds. The Colour of petals differs from plant to plant; some are bright and some are pale coloured. Thus, petals help us to distinguish one flower from another.

Reproductive parts of a Flower:

The reproductive parts of a flower consist of the following:

Androecium- It is the male reproductive organ. It consists of two parts, namely;

Anther- It is a yellowish, sac-like structure. It is involved in the production and storage of pollens.

Filament- It is a slender, threadlike object. It helps to support the anther.

Gynoecium: It is the innermost part and also the female reproductive organ of a flower. It comprises three parts -stigma, style and ovary. It is collectively called the pistil.

Stigma: It is the topmost part or receptive tip of the pistil in the gynoecium of a flower.

Style: It is the long tube-like slender stalk that connects the stigma and the ovary.

Ovary: It is the ductless reproductive gland. It holds a lot of ovules. It is the component of the plant where the seed formation takes place.

Draw a labelled diagram of vertical section of a flower and explain its various parts.

Important Questions on How do Organisms Reproduce?

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