Monocot vs Dicot Vascular Structure — NEET Biology

Which of the following statements are correct regarding cambium and secondary growth in flowering plants? S1. Cambium is typically present in the vascular bundles of dicot stems, making them open. S2. Secondary growth is a characteristic feature observed only in dicotyledonous roots and stems. S3. In monocotyledonous stems, the absence of cambium prevents the formation of secondary xylem and phloem. S4. The initiation of lateral roots and vascular cambium during secondary growth in dicot roots occurs in the pericycle. S5. Monocot roots commonly show a cambium ring developing between xylem and phloem, similar to dicot roots.