What are the important functions of flowers

The flower - structure and function (basic knowledge)

Have you ever taken a closer look at a bouquet of flowers or the flowering plants on a summer meadow? Then you must have noticed that the blossoms the plants often look very different, right?

Nevertheless, there is a basic structure of a flower that can easily be seen in many flowers. This fundamental one Flower structure I would like to show you in this video and also show you the function of each Flower components to explain.

Variation of leaves

This is a typical blossom that you have probably seen before: It is the blossom of a cherry tree. At first glance you can see that this flower can be divided into four different parts.

These different parts are modified leaveswhich, depending on their function, are structured very differently and can also be colored very differently. You will immediately see that the individual flower components are leaves from the names of the components, because they always contain the word stem "leaf".

Sepals and petals

Let's start from the outside. There you will find the green ones Sepals. This is followed by the petals, which are often also referred to as petals. Petals can be white like the cherry. But they can also have very striking colors. The function of sepals and petals is to protect the inner flower components, especially when the flower is still in the Bud stage is located.

The sepals and petals protect against weather influences such as rain and wind, but also against mechanical damage, e.g. from branches. You will get to know another function of the petals at the end of the video, because petals play an important role in the Pollination of flowers.


If we go further into that Interior of the flower go, let's see them Stamens. These are made up of the Stamen and the Pollen sac together. The pollen grains, which are also known as pollen, are released from the pollen sac. You've probably come across a flower before and had an orange-yellow stain on your T-shirt, right?

That was the pollen that was stripped from the pollen sacs. Stamens are the male flower organs and they form the male sex cells. And although they look so different from the sepals and petals, they are also transformed leaves.


You can find that inside the flower Carpel. This is also a modified leaf, although it has a completely different shape. The carpel is for what is called stamp grown together. Below is the thickened one Ovaryconnected to the sticky scar via the stylus. The carpel is the female flower organ that contains the ovule with the egg cell.

Function of reproduction

The function of an entire flower is not the pretty appearance that we humans are so enthusiastic about. Flowers are used for the reproduction of the respective plant species. The fruits of a plant, which contain the seeds, are formed from the flowers, or mostly only from the ovary.

In the case of the cherry tree, these are the cherries with the cherry pits they contain. The spread of these seeds results in the plant species continuing to exist. And that's why you can certainly imagine that a plant can do a lot to develop seeds, right?

And a plant can only do that if pollen gets onto the sticky stigma Pollen tube and the egg is fertilized. Only this meeting of female and male sex cells, i.e. fertilization, leads to the formation of seeds and is therefore of great importance for the plant.


Pollination is often done by insects. That is also the reason why many flowers and especially the petals are sometimes very colorful. This draws attention to pollinating insects. Most flowers still have strong scents and sugary nectar, which attracts insects. However, many plants also pollinate themselves and do not need insects for pollination.

In still other plants, the pollen grains are spread by the wind and the plants are pollinated in this way. You probably know that from the yellow pollen of pine and rape, which also collects on cars and other surfaces every year in May.


Next time, take a closer look at flowers from a bouquet or from other plants. With many flowers you can easily spot the sepals, corolla, stamens and carpels. Sometimes, however, the flowers are modified to such an extent that individual flower components are missing or have grown together.

In any case, the function of a flower is reproduction. This is why flowers that are pollinated by insects often have flashy colors, strong scents, or sugary nectar. Bye!