Question

Explain anomalous secondary thickening in dicot stem nyctanthus

Answer 1

Dracaena is a typical example of Anomalous secondary thickening in monocots. Typically, secondary thickeningis absent in monocots. Therefore, secondary thickening itself is an anomalyas Dracaena is a monocot. 3.It produces secondary vascular bundles on its inner side only and parenchymatous cells on the outer side.

Answer 2

Anomalous secondary growth is due to the formation of successive rings of collateral vascular bundles. These bundles get embedded in the thick prosenchyma and their phloem appears as included or interxylary phloem. Medullary bundles are innermost secondary bundles.