In which type of vascular bundle, xylem is covered on both side by phloem?

In which of the vascular bundles xylem is surrounded by phloem

In which of the vascular bundles xylem is surrounded by phloem

In which of the vascular bundles phloem is surrounded by xylem

In which of the vascular bundles phloem is surrounded by xylem

Which type of vascular bundles shows presence of cambium on both sides of xylem? Mention example.

Which of the following statements are correct? I. In amphicribral vascular bundle, xylem lying in centre is surrounded by a ring of phloem. II. In amphivasal vascular bundle, phloem lying in centre is surrounded by xylem. III. In amphivasal vascular bundle, xylem lying in centre is surrounded by phloem. IV. In amphicribral vascular bundle, phloem lying in centre is surrounded by ring of xylem.

In the vascular bundle of leaf, xylem is located towards the adaxial side of the leaf.