Which of the following could be seen in the Mesozoic,but not the Paleozoic?

Question

Quizplus · Accepted Answer

Gymnosperms, or "naked seed" plants, first appeared in the late Paleozoic but became very diverse and dominant in the Mesozoic, particularly in the Jurassic and Cretaceous periods. Mushrooms did not appear until the late Paleozoic, and flowering plants did not evolve until the late Mesozoic. High levels of photosynthesis would have occurred in both periods.

Which of the Following Could Be Seen in the Mesozoic,but