Question

1. which category of gymnosperms are thought to have given rise to modern - day flowering plants? ginkgo cycads conifers gnetophytes

Explanation:

Among gymnosperms, gnetophytes have features similar to angiosperms (modern - day flowering plants) such as double - fertilization and vessel elements in their xylem, suggesting they may be the gymnosperm group that gave rise to flowering plants.

Answer:

D. gnetophytes