Reproduction - the most important property of living organisms, with its help they can make the descendants, transfer them the genetic material, so, keep the continuity of life. There are two main ways of reproduction - sexual and sexless, they in turn are divided into subspecies.
Instruction
1. At the heart of reproduction of any cellular organism there is a cell fission. Sexless reproduction - the most ancient way of reproduction, it is widespread among simple organisms and consists in formation of a new individual from usual cages of a parental organism, without participation of reproductive cages. Sexual reproduction - more perfect form of reproduction, is necessary for it merge of reproductive cages.
2. Division - the easiest way of reproduction characteristic of the simplest unicells. As a result of division the parental organism is divided into two or more affiliated.
3. Budding - more difficult type of reproduction, is inherent simple multicellular - to hydras, polyps and some unicells - yeast. In the course of budding on a body of the parent there is an outgrowth of which the new organism is formed further.
4. At fragmentation the parental individual breaks up to parts, and from these parts descendants are born. By means of fragmentation, elode, starfishes, Annelidas breed.
5. Vegetative reproduction is inherent in many plants, it is that the organism grows up special structures of which the new individual is formed. Roots, escapes, bulbs, sheets can be such structures.
6. Reproduction by disputes consists in education in a parental organism of special cages - a dispute which are resistant to environmental impact. At hit in favorable conditions the disputes develop in a cage, capable to division.
7. Sexual reproduction demands presence of two individuals - men's and women's, each of which produces special reproductive cages - gametes. They have to merge in the course of fertilization for formation of a new organism. Sexual reproduction is more perfect because there is a continuous change and updating of genetic material.
8. Allocate three types of sexual reproduction - an isogamy at which men's and female cages have the identical size and mobility, a heterogamy - female cages are larger, an ovogamiya - large motionless female cages and small mobile men's. The most part of plants and animals breeds by means of an ovogamiya.