AP BIOLOGY

Detailed explanation-1: -The xylem tissues also lack cell organelles. Therefore, they are considered dead.

Detailed explanation-2: -Xylem is dead at maturity, while phloem is living. All other answer choices are true. Xylem is also thicker and more rigid, which allows for greater pressure during water transport. It provides a strong support structure for the plant, enabling taller growth.

Detailed explanation-3: -Mature phloem is a live tissue, whereas xylem is dead when mature. Explain why it is necessary for phloem to be alive to be functional, whereas xylem can function as dead tissue.

Detailed explanation-4: -Final answer: Xylem parenchyma is a living cell of the xylem.