Hector was doing some experiments with plants. The plants have two variations of the flower color - pink or white. He used pollen from one plant and fertilized another plant. He noticed that sometimes when he crossed two plants with pink flowers, some offspring had white flowers. Explain how this could happen. Remember C. E.R (only two pieces of evidence is needed) *

Retype the question .

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

Sorry  i don't understand can you rephrase that