The vascular cambium is of secondary growth type in the case of dicot root. The cambial tissue is originated from the region that is present below the phloem and above the protoxylem. This region has the tissue that is also a part of the pericycle tissue. The vascular cambium will form the shape of a continuous wavy ring. The other secondary processes that occur in the root are similar to those that occur in the dicot stem. The various stages of secondary growth that can be observed in dicot root are described in the figure given here. Secondary growth is observed also in the roots and stems of Gymnosperms. But, secondary growth is not seen in monocotyledons.
No comments:
Post a Comment