Explanation:
In Angiosperm (flowering plant), xylem contains vessels and phloem possesses sieve tubes and companion cells.
Vessels are abscent in pteridophytes except some species of selaginella, Adiantum, pteris, pteridium and equisetum. Also abscent in Gymnosperm except Gnetum welwistchia and Ephedra.
Companion cells abscent in pteridophytes and Gymnosperms.