Question

Apoptosis, or programmed cell death, is an important step in the development of xylem. How does apoptosis contribute to xylem development?

a) Apoptosis creates gaps in the xylem, allowing for water transport.
b) Apoptosis removes nuclei and organelles, enabling cells to conduct water.
c) Apoptosis creates vessels for the passage of water and minerals.
d) Apoptosis allows cells to elongate and differentiate into xylem cells.

Answer 1

Apoptosis contributes to xylem development by allowing cells to elongate and differentiate into xylem cells, forming a vascular tissue that transports water and minerals.

Step-by-step explanation:

Apoptosis contributes to xylem development by allowing cells to elongate and differentiate into xylem cells. This process helps in the formation of vascular tissue that transports water and minerals. The dead xylem cells lack end walls and have reinforced side walls, making them stiff and waterproof. The formation of gas bubbles in xylem vessels, termed embolisms, can interrupt the flow of xylem sap.