Four of the five choices listed below are characteristics of phloem. Select the exception.

Four of the five choices listed below are
  characteristics of phloem. Select the exception.
  a. consists only of cell walls
  b. characterized by channels across plant cell walls
  c. sieve plates found between some cells
  d. includes accessory companion cells
  e. transports sugar

Question 2

Four of the five choices listed below are
  characteristics of xylem. Select the exception.
  a. is dead at maturity
  b. cell walls are impregnated with lignin
  c. conducts dissolved food
  d. includes tracheids and vessels
  e. has pits in the walls of the cells