Flowering plants are the most numerous group of flora, the majority of herbs, bushes and trees concerns to it. About 250 thousand species of flowering plants are known. All representatives of this group in the course of maturing have a special body of reproduction — a flower.
Instruction
1. Generally flowering plants are pollinated by insects, and their strictly certain types. For example, only heavy shaggy bumblebees are capable to open flowers of a clover or a sage. And flower flies-zhurchalki with the sucking proboscises - only who can reach nektarnik of a geranium.
2. Flowers emit nectar and attract pollinators with a smell and coloring. When insects collect nectar, to them pollen grains which part gets then on other flowers stick. After pollinations flower fades, petals fall down, and on its place the fruit with seeds develops. Seeds ripen and are carried by wind, water, birds, animals and also people in cultural gardening. This seed reproduction is called sexual.
3. Sexual reproduction of flowering plants is most optimum as seeds are formed practically always. Minus this way of reproduction - difference of signs of a new plant from maternal. Usually it concerns coloring change. In decorative gardening the reproduction by seeds is applied usually at cultivation of annual and biannual plants. Seeds for crops have to have very high sowing qualities - lack of contamination diseases and wreckers, viability, fineness, etc.
4. Amateur gardeners make multiple copies flowering plants in generally vegetative way. For reproduction by this way any part of a parental plant – a root, a stalk, a leaf is used. At vegetative reproduction, high-quality signs of an initial plant - coloring of flowers, height, etc. are completely copied.
5. Vegetative reproduction happens in various ways. The most popular of them - reproduction by root offsprings. It practically always results in positive results. Also demanded ways - reproduction by a cherenkovaniye, division of a bush, a part of a leaf, offsprings, layers, mustache, an inoculation. The disconnected part of the parent lands in nutritious substrate where it takes root.