Question

What is the characteristics of a vascular bundle of monocot stem?

• A. Open and surrounded by a sclerenchymatous bundle sheath
• B. Closed and not surrounded by bundle sheath
• C. Closed and surrounded by bundle sheath
• D. Open and not surrounded by a bundle sheath

Answer 1

The correct option is C Closed and surrounded by bundle sheath

In a monocot stem the vascular bundles are not arranged in a circle but are usually scattered throughout the ground tissue. There is no clearly defined pith as there is in many dicotyledonous species.

The vascular bundles of monocotylenous plants do not contain a layer of meristematic tissue (cambium) as the dicots do. Thus, no new cells can be formed inside the vascular bundles of monocots and their vascular bundles are termed as closed, whereas those of dicot plants are open. Bundle sheath is developed either partly or completely surrounding the vascular bundle. Thus, option C is correct.