Marisol wanted to show her younger sister how celery can change color. She took two stalks of celery, with the leaves attached, and cut the bases off the stalk in a jar
that contained water and blue food coloring, and the other stalk in a jar that
contained water and red food coloring. When they looked at the celery the next
morning, Marisol's sister was amazed that the celery leaves had become red and
blue. Which process is directly responsible for the leaves being colored?
Capillary Action
Transpiration
Photosynthesis
Pressure Flow Principle