A) Parallel ventation
B) Perennial plants
C) Distinct branches (long and short branches)
D) Xylem with vessels
Correct Answer: D
Solution :
Gymnosperms (Gymno = naked, + spermaseed) are naked seeded plants in which ovule is not covered by ovary. In gymnosperms, xylem contains only tracheids and xylem parenchyma; vessels are absent (exceptionally present in Gnetales).
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