For each of the following questions or statements choose the choice which best answers that question or completes that statement. Indicate the appropriate answer using a number two pencil on your scantron sheet. For questions 1 through 4, select the number of the term best described by each statement.
Carries water up the stem.
Food travels downward in stems. Chief tissue where photosynthesis occurs. Regulates the rate of transpiration. A student placed a stalk of celery in a beaker of water that had been colored with a dye. After a few hours, the student cut the stalk and observed that the dye could be observed in a cross section of the cut stalk.