Final answer:
The correct sequence of plant group emergence from most ancestral to most recent is bryophytes, seedless vascular plants, gymnosperms, and angiosperms.
Step-by-step explanation:
The correct sequence of the appearance of the four major groups of plants in the fossil record, from most ancestral to most recent, is: bryophytes, seedless vascular plants, gymnosperms, and angiosperms. This tells us that bryophytes were the first land plants and likely emerged around 500 million years ago. Seedless vascular plants such as ferns followed bryophytes in the plant evolution timeframe.
Gymnosperms, with their distinctive trait of nak ed seeds, became the dominant plant group during the Mesozoic era. Finally, angiosperms, characterized by flowers and enclosed seeds, took dominance by the middle of the Cretaceous period and are currently the most abundant group of plants on Earth.