Evolution of Seed Plants

Free Response

The Triassic Period was marked by the increase in number and variety of angiosperms. Insects also diversified enormously during the same period. Can you propose the reason or reasons that could foster coevolution?


Both pollination and herbivory contributed to diversity, with plants needing to attract some insects and repel others.

What role did the adaptations of seed and pollen play in the development and expansion of seed plants?


Seeds and pollen allowed plants to reproduce in absence of water. This allowed them to expand their range onto dry land and to survive drought conditions.