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