Which statement correctly describes the vasculature found in angiosperms and gymnosperms?
A) Angiosperms contain secondary xylem, whereas gymnosperms rely on primary xylem alone for structural support and water conduction.
B) The presence of phloem companion cells in angiosperms indicates that they evolved before gymnosperms—a group that subsequently lost this feature.
C) Vessel elements in the xylem of angiosperms have allowed members of this group to surpass gymnosperms in terms of both life span and height.
D) Both angiosperm and gymnosperm vascular cells contain fiber to support secondary growth—a trait that distinguishes them from their seed fern ancestors.
E) With the exception of the gnetophytes, living gymnosperms have only tracheids for conducting water and providing structural support, whereas angiosperms typically contain vessel elements and fibers.
Correct Answer:
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