Q. A piece of wood having no vessels (trachea) must be belonging to

 2582  220 Anatomy of Flowering Plants Report Error

Solution:

Vessels are absent in gymnosperms and pteridophytes with the exceptions of a few e.g., Selaginella, Gnetum. Presence of vessels is a characteristic feature of angiosperms. Out of the given options, teak, mango and palm are angiosperms, thus they will contain vessels.