Despite the seeming simplicity of flowers and herbs, plants - are complex organisms, consisting of various tissues and organs.
Depending on their functions, distinguish vegetative and generative organs.
plant organs - is part of the body that hasdefined structure and are intended to perform certain functions. Vegetative organs, and these are the roots and shoots to form the body of the plant, keep it in the soil and provide its vital functions - food and metabolism.
Root - a body axial plants,located usually underground. It is capable of unlimited growth, serves to secure the plants in the soil, as well as to water absorption with dissolved mineral substances necessary for living organism, and carrying it to the stem and leaves. Also, the storage of nutrients may occur at the root, which is not currently required. The root is able to interact with the roots of other plants, fungi mycelia and microorganisms living in the soil, benefiting from such a community.
There are main, lateral and adventitious roots,intensity and length of which varies depending on the type of plant, its origin and its growth conditions. Sometimes the roots can and do mutate, forming roots and root tubers with a supply of nutrients. Some roots have not only the main power plants and securing function, but also allow the plant to cling to being nearby objects, or by being handed down to the outside, are involved in breathing.
Escape the plant consists of a stem and arrangedit leaves. The stem is the mechanical axis of the plant. Also, it is done through transport and storage of nutrients. The green part of the stem along with the leaves carry out photosynthesis. Some modifications of the stems (eg, spikes) are used to protect plants.
The main function of the leaves is photosynthesis. In the cells of the body plant chlorophyll pigment is able to trap the sunlight and under the action of the water to form carbon dioxide and glucose sugar. This substance is a versatile source of energy and is involved in many biological processes. Also, the leaves are stomata, through which plants breathe, like animals, absorbing oxygen and releasing carbon dioxide. Authority participates in the removal of excess liquid. Leaves, as part of the stem, can be modified into spines, and carnivorous plants - form a trap to catch insects and small animals.