Respuesta :
(Option B.) Charophyceans were the most abundant plant group during the time dinosaurs were dominant, since angiosperms had not yet evolved.
The Dominant Plant Group During the Age of Dinosaurs: Charophyceans
- Option B. Charophyceans
Charophyceans were the earliest known form of green algae, appearing in the fossil record in the Cambrian period. They are characterized by a hard, silica-encrusted cell wall, and they used photosynthesis to produce energy. This type of plant life would have been abundant in the shallow waters of the Mesozoic era, which was the period when dinosaurs were the dominant animals on earth. Charophyceans were likely the main source of food for some dinosaurs, as well as an important part of the food chain for other species. Charophyceans also provided oxygen to the atmosphere, helping to sustain the environment that allowed for the development of the dinosaurs.
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