Which of the following probably did NOT contribute to the diversification or ecological dominance of angiosperms in the Cretaceous period?

Question

Quizplus · Accepted Answer

More efficient forms of rubisco, which is the enzyme responsible for carbon fixation in photosynthesis, is a more recent development in evolutionary history and is not specific to angiosperms. Animal pollination, double fertilization, and xylem with vessels and fibers are all unique adaptations that likely contributed to the success of angiosperms in the Cretaceous period.

Which of the Following Probably Did NOT Contribute to the Diversification