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Organogenesis

#Organogenesis, in embryology, the series of organized integrated processes that transforms an amorphous mass of cells into a complete organ in the developing embryo. The cells of an organ-forming region undergo differential development and movement to form an organ primordium, or anlage. An adult plant consists of many specialized cell organizations: tissues and organs. Several tissues are organized together to form an organ, such as leaves, roots, flowers and the vascular system. ... The process of initiation and development of an organ is called organogenesis. n vertebrates, one of the primary steps during organogenesis is the formation of the nervous system. Interestingly, the nervous system originates from ectodermal, not mesodermal tissue. During the formation of the neural system, induction causes some cells at the edge of the ectoderm to become epidermis cells. Plant organogenesis In vitro and in response to specific cocktails of hormones (mainly auxins and cytokinins), most plant tissues can de-differentiate and form a mass of dividing totipotent stem cells called a callus. What is direct organogenesis? Direct organogenesis, embryogenesis, micro grafting, meristem culture and its importance for fruit crops. ...  Organogenesis takes place in two stages, namely caulogenesis or shoot initiation and rhizogenesis or root initiation.  Both types of organogenesis are controlled by the hormones present in the medium.