I believe it’s the y variable.
Explanation:
The cellulose make stems, leaves and branches. So it play an important role in building of tissues. So it give the shape to plant. The molecules of cellulose have hydroxyl group that form hydrogen bonding with other cellulose and prrovide support to plant.
Answer:
A factors or conditions within an experiment that is kept the same is called the=Control variable
It converts them into sugars that the plant can use
