A transverse section of a plant axis reveals radial vascular bundles with exarch protoxylem. The number of xylem patches is observed to be four (tetrarch). Which of the following anatomical features will also be found in this plant axis?

Step-by-step solution

The presence of radial vascular bundles with exarch protoxylem is a characteristic feature of roots. The tetrarch condition (four xylem patches) specifically identifies the plant axis as a dicotyledonous root, since monocotyledonous roots typically have a polyarch condition (more than six xylem bundles). In a dicotyledonous root, the pith is small or inconspicuous. A large and well-developed pith is found in monocotyledonous roots. Cambium present between primary xylem and primary phloem is a feature of conjoint op