AP BIOLOGY

Detailed explanation-1: -The plant tissue with dead cells is called the xylem. Dead cells make up these tissues since they can give plants mechanical strength and don’t need a lot of maintenance. It is a type of plant vascular tissue .

Detailed explanation-2: -All tissues in the xylem except the xylem parenchyma are dead. Their cytoplasm is highly reduced and they only perform the function of conduction. The xylem tissues also lack cell organelles. Therefore, they are considered dead.

Detailed explanation-3: -Sclerenchyma: Sclerenchyma cells consist of dead cells they are permanent tissues present in plants. They provide hardness and protection for plants.

Detailed explanation-4: -The xylem contains a variety of elements-tracheids, vessels, xylem fibers, and xylem parenchyma. Xylem vessels always push water upwards and nutrients towards roots. Tracheids are dead tubular cells with tapering ends, vessels with thin elongated structures that have a tubular appearance, and no cytoplasm.

Detailed explanation-5: -Xylem is a complex permanent tissue specialized for transport of water and minerals. The cells of xylem are dead at maturity and devoid of protoplasm except for xylem parenchyma cells, which are living cells.