The basis reproduction of any cell of the body is cell division.Asexual reproduction - an ancient method of reproduction, it is common among simple organisms and is the formation of a new individual of the common parent cell of the body, without the participation of reproductive cells.Sexual reproduction - a more advanced form of reproduction, it is necessary to merge the reproductive cells.
division - the easiest method of propagation characteristic of the protozoa.As a result of dividing the parent body is divided into two or more child.
Budding - a more complex form of reproduction is inherent in simple multicellular - Hydra polyps and some single-celled organisms - yeast.During
budding parent body appears the build-up, which later formed a new organism.
When fragmentation parent specimen breaks apart, and these are often born descendants.With the fragmentation of multiply Elodie, starfish, segmented worms.
Vegetative reproduction is inherent in many plants, it is that the body grows special structures, of which, a new individual.Such structures can be roots, shoots, bulbs, sheets.
Reproduction disputes is the formation of the parent body of special cells - spores that are resistant to the environment.When injected into the favorable conditions spores develop into capable of cell division.
Sexual reproduction requires the presence of two individuals - men and women, each of which produces specialized reproductive cells - gametes.They should merge during fertilization to form a new organism.Sexual reproduction is more perfect because of the fact that there is a constant change and renewal of the genetic material.
There are three types of sexual reproduction - isogamy in which male and female cells have the same size and mobility, heterogamy - female cells larger ovogamiyu - large fixed female cells and small moving men.Most of the plants and animals reproduce with the help of ovogamii.