The classification allowing to unite all types in groups on similar signs is developed for simplification of studying wildlife by scientists. All angiospermous plants are subdivided into monocotyledonous and bichromatic depending on the structure of their seeds.
Bichromatic plants
Bichromatic, or Magnoloipsida – class flowering plants at which the germ of a seed has two side cotyledons. Bichromatic is an ancient numerous group of plants which many representatives are of great importance in human life. Food and forage crops – potatoes, beet, a buckwheat, olive – sunflower, fruit and berry crops – an apple-tree, grapes and also officinal, spicy, fibrous plants and many others occur among them.
Besides two symmetric cotyledons, Magnoliopsida have also other characteristics. Most often among them plants meet a core root system at which the main root is explicit and are practically absent side and additional. In stalks of representatives of this class Pokrytosemennykh there is a cambium thanks to which plants can increase in thickness. Leaves at Bichromatic can be both simple, and difficult, with the cut-up edges and shanks. Flowers Magnoliopsid, four- or five-membered, possess most often a double perianth. Among Bichromatic entomophily is widespread.
Monocotyledonous
Scientists incline to opinion that Monocotyledonous, or Lileopsida – younger group of plants which came from Bichromatic. This class less numerous, than previous, but also totals many representatives. To Monocotyledonous Lily family, Asparagus family, Orchid family, Sedge, Palm, Cereals belong. The main difference of this class is that the seed germ at Lileopsid has only one cotyledon. There are at this group also other features which are simpler for noticing with the naked eye. A root system at the majority Monocotyledonous mochkovaty. The main root pretty fast ceases to develop, but big length is reached by numerous subordinate clauses and side roots. As a rule, in stalks Lileopsid is absent a cambium therefore they thin and are not capable to grow in thickness. While among Bichromatic grassy plants, trees and bushes meet, representatives of the class Lileopsida are grassy plants and very not numerous trees. Leaves at these plants simple, without scape. As a rule, they long as some time grow at the expense of the educational fabric which is at their basis. At Monocotyledonous tripartite flowers most often meet a simple perianth, the few representatives of this class should attract insects to pollination. Usually Monocotyledonous for transfer of pollen resort to the wind help.