Rainbow smelt and yellow perch attempt to occupy the same area. the more aggressive smelt survive; the perch do not. limiting factor? explain

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?