Question

Why concentric bundles are always closed?

Answer 1

A vascular bundle in which xylem surrounds phloem, or phloem surrounds xylem. ... a bundle of conducting tissues of xylem and phloem in the stems and leaves of several ferns and angiosperms. In an amphicribral bundle, the phloem surrounds the xylem.

Answer 2

Hey dear,

◆ Answer -

Concentric vascular bundle are always closed because one type of vascular bundle always surrounds the other.

◆ Vascular bundles -

• Specific arrangement of conducting vessels (xylem & phloem) in the plant are called vascular bundles.
• Usually they are classified as collateral, bi-collateral and concentric vascular bundle.

◆ Concentric vascular bundles -

• In this type, one vascular bundle always surrounds the other.

It can be of two types -

1) Amphicribral -

• Phloem surrounds the xylem

2) Amphivasal -

• Xylem surrounds the phloem

Hope this helped you. Thanks for asking..