Mandela, the former president of the Republic of South Africa and Nobel Peace laureate, spent more than 40 yearsâ27 of them in prisonâas a central figure in the struggle against South Africaâs brutal and restrictive racial regime called apartheid.
meristem culture. (shoot-tip culture) The culture of excised meristems on suitable nutrient media under aseptic conditions. The stem apex is usually used though axillary meristems may also be taken.Often gibberellic acid must be added to the medium to promote normal growth into a plantlet.shoot-tip culture) The culture of excised meristems on suitable nutrient media under aseptic conditions. The stem apex is usually used though axillary meristems may also be taken. Often gibberellic acid must be added to the medium to promote normal growth into a plantlet.
Marestematic TissueMaristematic tissue is composed of actively dividing cells. It is located on the growth point in stem tip. Cambium of dicotyledon, and root tip. Types of Meristematic Tissue Based on the location Meristematic tissue can be distinguished into apical, intercalary, and lateral meristems.Apical meristem is located on the tip of rood and stem. Intercalary meristem is located between mature tissues, e.g at the base of nodes in grass stem.asically, there are three types of primary meristem as follows. 1  Protoderm, which is the outer layer of developing tissues (derived from apical meristem). 2  Ground meristem, Which is meristem which form ground tissues. 3  Procambium, which is meristem which form vascular tissues.