Final answer:
No, mosses are not a direct ancestor of flowering plants. Mosses are nonvascular plants, while flowering plants are vascular plants.
Step-by-step explanation:
No, mosses are not a direct ancestor of flowering plants. Mosses are nonvascular plants, while flowering plants are vascular plants. The first plants to colonize land were most likely related to modern-day mosses, but they were followed by liverworts and primitive vascular plants before the emergence of flowering plants. The evolutionary trend led to a dominant sporophyte generation in seed plants, which is not seen in mosses.