Question

Vessels in xylem are found in (a) all angiosperms and gymnosperms

Answer 1

As vascular plants, both groups contain xylem and phloem. All but the most ancient angiosperms contain conducting tissues known as vessels, while gymnosperms (with the exception of Gnetum) do not. Many ecological niches are filled only by angiosperms.

Answer 2

xylem vessels are found only in ANGIOSPERMS but not in gymnosperm and pteridophytes. there are some exceptions in angiosperms also who do not contain xylem vessels, some primitives angiosperm families like trochodendraceae, tetracentraceae and winteraceae do not have vessels.