The stem is the part of the bamboo plant that grows above the ground, it is usually straight and cylinder-formed (to some extent oval). These bamboo stems have nodes (diaphragms) between two internodes, that strengthen the stem.The length, number and form of nodes and internodes depend on the bamboo species. Internodal length is also much shorter towards the base of the culm compared to the internodal length towards the tip of the culm.
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