List three reasons why (T/S) of stem can be distinguished as that of a stem and not a root
1. Nodes and internodes: Stems have distinct nodes and internodes, while roots do not have these identifiable features. The nodes are the points on the stem where leaves and branches emerge, while the internodes are the spaces between these points.
2. Buds and leaves: Stems have buds and leaves growing from nodes, while roots do not. Buds are small, undeveloped shoots that can grow into branches, and leaves play an important role in photosynthesis. Neither of these structures is typically found on roots.
3. Secondary growth: Many stems undergo secondary growth, which involves the production of additional layers of tissue that increase the width of the stem. This type of growth is not seen in roots, which typically only grow in one direction and do not get wider over time.