Wound meristerae - are formed from specialized living cells located near the damaged areas and provide recovery of the damaged part of the body. Regeneration begins with dedifferentiation — the reverse development from specialized cells to meristematic cells. The cells that entered this process regain their ability to divide. Once on the surface, they turn into fellogen , which, in turn, forms a plug covering the wound surface.
In another case, the dedifferentiated cells, when sharing, form a loose parenchymal tissue - callus . Under certain conditions, plant organs can form from it. Sometimes, embryo can develop from callus cells, which subsequently develop into an independent organism (this can be easily observed on a cut begonia leaf, where the embryos will develop from epidermal cells in the area of the cut veins).