Alice put identical bean seedlings in paper cups with good soil. She covered each cup with a different transparent plastic -clear, red, green, and blue. She set the cups in the sun, watered them identically, and kept a record of the height of each plant. What is the control of this experiment?

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?