A cavity formed by the disintegration of protoxylem tracheids in the Equisetum stem is called
Answer: Cranial cana
Explanation
Mature vascular bundles have a canal called the carinal canal.
It is one of a number of longitudinal channels inside the metaxylem and is formed by the disintegration of the protoxylem.
Commonly seen in Equisetum.
ND19-3-2023
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