Fill in the blanks:
The meristems which occu at the tips of roots and shoots and produce primary tissues are called …1.. Meristems.
The meristem which occurs between mature tissues is known as …2… meristem
During the formation of leaves and elongation of stem, some cells'left behind' from shoot apical meristem, constitute the…3….
..4… occurs in grasses and regenerates parts removed by the grazing herbiovres.