Guide
1
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.
2
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.
3
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.
4
When fragmentation parent specimen breaks apart, and these are often born descendants.With the fragmentation of multiply Elodie, starfish, segmented worms.
5
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.
6
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.
7
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.
8
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.