Which of the following is a characteristic of phloem cells?
(A) contain cytoplasm at maturity and used to transport water from the roots to
the rest of the plant
(B) contain cytoplasm at maturity and used to transport sugars throughout the
plant
(C) lack cytoplasm at maturity and used to transport water from the roots to the
rest of the plant
(D) lack cytoplasm at maturity and used to transport sugars throughout the plant