Which of the following was the dominant plant group during the time when dinosaurs were the dominant animals?

Differentiate between the plant groups listed: Mosses are non-vascular plants that thrive in moist environments, ferns are vascular plants that reproduce via spores, angiosperms are flowering plants that became dominant after the Mesozoic Era, and gymnosperms are seed-producing plants without flowers, such as conifers.

Connect the ecological relationship: Gymnosperms provided food and shelter for dinosaurs, making them the dominant plant group during the Mesozoic Era.