predecessors of angiosperms are gymnosperms, the pollen that carried exclusively by the wind.Angiosperms as a result of evolution gained brightly colored flowers, a pleasant aroma and edible nectar.All this has led to pollinate more effective way - by insects.
seeds of these plants are surrounded by fruit, protecting them from external influences.Many angiosperms as a result of the evolution of steel to produce toxic substances that protect them from being eaten by animals.These and other factors have contributed to the wide dissemination of flowering.
Department angiosperms includes a class and the class Monocotyledonous Dicotyledones named according to the number of shares in the seed.Monocots have a fibrous root system, herbaceous stem, leaves and simple tripartite flower.Most of the
m are pollinated by the wind.
dicots have a pivotal root system branching herbaceous or lignified stem, simple or compound leaves, five-membered flower.Most of them are pollinated by insects.Classes of monocotyledonous and dicotyledonous divided into families.
large percentage of monocots cultivated man, important among them are cereals.Onion plants are also monocots brightest representatives - onion, leek, garlic.Tulips, lilies, hyacinths also belong to this class.
Cereal plants are basically grass, although there are exceptions - the bamboo.These include rye, barley, wheat, oats, corn, rice.The stem is hollow inside grasses, flowers are collected in spikes.
family Rosaceae Class dicots presented fruit trees: apple, cherry, plum, pear and apricot.Others are decorative, such as rose.There are shrubs such as raspberry and rose.
legume family - one of the largest among the angiosperms.The fruits of many of them are used in foods: peas, beans, chickpeas, peanuts, soybeans.Among them are the trees, such as black locust and shrubs - yellow acacia.
cruciferous class Dicotyledones man gave such important benefits as cabbage, radish, horseradish, mustard, rutabaga.There are medicines representatives: gillyflower, Mattioli, alyssum.However, a large percentage of cruciferous weeds: shepherd's purse, common winter cress, wild radish.
Solanaceae plants are also bipartite, among them - potato, tomato, eggplant, pepper, tobacco.Some of them (black henbane, datura ordinary) produce dangerous to human poison.The family Asteraceae is inflorescence basket.Its representatives are sunflowers, aster, cornflower, dandelion, calendula.
- classification of angiosperms
- General characteristics of angiosperms