What is a tropic hormone and what organs release them?

What type of genetic drift would be simulated if all the beans that were not selected died out?

Wich organism obtains its energy from dead or decaying matter

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?