The flower is this .... The concept, features, functions

An important role in the structure of the flower of the plant is played by the receptacle, whose functions consist in creating a reliable support for other parts of the flower.

General structure of the flower

The flower is a modified shoot, limited in growth and fulfilling the functions of stamen formation and the formation of seeds and fruits.

The flower is located on the main or lateral stem, part of the stem under it is called a pedicel. Then it goes to the axis, which is called the flower-root. On it are placed all the other parts of the flower: sepals, petals, pistils and stamens, inside which are pollen bags and ovules.

The sepals and petals form a perianth, inside which there are stamens and pistils. Most plants have both pistils and stamens. Such plants are called bisexual. But there are plants with same-sex flowers. Also, male and female flowers can be found on the same plant or on different plants.

The concept of "flower-tree"

Now let's go directly to the topic of publication and give a definition of the concept. The caress is the dilated upper part of the pedicel. From this part depart the rest, as discussed above. Has stem, unlike other parts, origin.

In other words, the peduncle is the axial part, which takes part in the formation of flowers.

The flower is the tip of the stem, on which other elements of leaf origin develop. The internodes between these elements are usually minimized. Therefore, this axis is very short.

Some say that the flower-root is a "flower bottom", or they call it a "torus". It is slightly wider than the pedicel and can take a different shape: elongated, convex, flat, concave, conical, goblet.

Features tsvetozlozh different plants

The shape of the axial part can become more complicated. Due to the growth of the intermediate tissues, which are below the apex, outgrowths of the flower-bud are formed. They can be of various shapes and have an interesting name for "glands." They can fuse with each other, and also form closed outgrowths, similar to rings. In this case, they are called disks.

Also in the future, the goblet flower can become more complicated, growing together with the walls of the ovary, to which it closely adjoins. In this case, the ovary will not be found in the flower itself; It is located at the bottom and forms an integral part with the axial part. It also seems that the other elements of the flower are attached to the top of the ovary, in this case called the lower part. Examples of plants with this type of arrangement of elements are cucumber, sunflower and apple. They have flowers falling from the fruit, which are formed from the ovary.

It has been said above that the interstices of the axis are minimal, but sometimes they can develop quite strongly. In some plants of the clove family (for example, in the dawn), the internode developed between the whisk and the calyx. Some of the family of capers are between pestles and stamens. This family also develops androfor - interstitial petals of the corolla and stamens.

Some plants have carpophore - an elongated peduncle, during the ripening of the fetus, raising it above the perianth.

Rejuvenator chamomile

Camomile is one of the most useful plants. There are many kinds of chamomile, but the most famous is chamomile, or chamomile, medicinal.

Some of its morphological features help distinguish this species from others. One of these features is the axial part. The flower of a daisy is naked, hollow inside.

As soon as flowering begins, it has a hemispherical shape, and at the end of flowering and when fruits appear, it changes to elongated and narrow-conical.

Thus, the flower-root is that part, without which it is impossible to form a flower, and subsequently a fetus.