An organ is a part of a plant thatoccupies a certain position, is characterized by a certain structure and performs certain functions. One of them is the kidney. Despite its small size, it performs many important functions. Why the bud is called the embryonic shoot, briefly describe in our article.
This body is a future plant.Why is a bud called a budding shoots system? It's all about its structure. At the base of the bud is a rudimentary stem, which turns into a growing cone. Here are the cells of the educational tissue - meristem. With the onset of a favorable period, they intensively divide, causing the development of escape.
Consider any kidney.You will see that it can be brown, brown or gray, and outside it is covered with dry scales. These are modified leaves that protect the future escape from damage. An additional barrier from unfavorable environmental conditions is the resin, which the kidney flakes secrete. In some plants for protection against temperature drops and lack of moisture, they are covered with thick fuzz.
Thus, the bud consists of a stem withshortened internodes (distance between leaves) and leaves. At first glance, this can not be believed, because all these parts of the plant are modified. That is why the buds are called the rudimentary shoot.
Rudimentary shoots are classified according to certainfeatured. One of them - the nature of the location on the stem. Depending on this, the kidneys are lateral and apical. The first ones are located on the sides of the stem, most often in the leaf axils. But there are exceptions to this rule. For example, in Kalanchoe, the kidneys are located on the edge of the leaf blade. And at a raspberry - on roots and an underground part of stalks. Such buds are called adventitious.
Why the buds are called the embryonic shoot, we have already found out. Now let's look at their views on the features of the structure.
This type of buds on the embryo stem containsrudiments of leaves. In the spring, when the duration of daylight hours increases, they begin to develop first. Why the buds are called the rudimentary shoot is also explained by the fact that food comes at their expense. Vegetative rudimentary shoot forms leaves. It is in these plant organs that photosynthesis takes place. It is especially needed in the spring, when deciduous trees "come to life" after the winter period. For the development of leaves, flowers, fruits and the root system need energy. Autotrophs form it independently, using chemical bonds of organic compounds, in particular, glucose monosaccharide. This substance is formed in green plastids of chloroplasts in the presence of water, solar energy and carbon dioxide. This is the main reason why a kidney can be called a rudimentary shoot.
Рассматривая зачаточные побеги древесных plants, you can see that they are not all the same size. The larger ones are generative buds. From them flowers develop. But most of the buds on the plant are mixed. They simultaneously have the beginnings of flowers and leaves.
Why can a kidney be called an embryonic shoot? Another reason is that, in addition to food, the shoot escapes the growth of plant organisms.
In spring, apical buds begin to swell, new shoots begin to appear. And during the whole favorable period the plant grows in size.
Development is another reason thatexplains why the buds are called the rudimentary shoot. Heat, moisture and solar energy are the main conditions in the presence of which the kidneys begin to develop. The cells of the educational tissue are intensively divided, pushing the scales. The internodes lengthen, resulting in a young shoot, on which are green leaves. Over time, the scales die off, because the need for their functions is eliminated.
If the plant grows in conditions of moderateclimate zone, in winter the development of its kidneys is terminated. In the spring it resumes. Some buds may be dormant for several years. This is a kind of reserve plants. They are called sleeping. If the apical rudimentary shoot is damaged, they begin to develop, forming new stems with leaves.
Kidney vitality is paramountimplementation of the life cycle. The development of leaves, carrying out photosynthesis and gas exchange, flowers - organs of sexual reproduction, and young shoots - these are the most important functions of these plant parts, without which their growth and development are simply impossible.
