Question

In a dividing plant cell, what structure forms during telophase that directs vesicles carrying cell wall components to the middle of the cell, assembling a new cell wall called the cell plate?

1) Centrosome
2) Phragmoplast
3) Golgi apparatus
4) Endoplasmic reticulum

Answer 1

The phragmoplast is the structure that forms during telophase in plant cells, guiding the assembly of cell wall components into the new cell wall, also known as the cell plate.

Step-by-step explanation:

In a dividing plant cell, the structure that forms during telophase and directs vesicles carrying cell wall components to assemble a new cell wall, called the cell plate, is the phragmoplast. The Golgi vesicles are transported along the microtubules and coalesce at the metaphase plate to form this phragmoplast. As the vesicles fuse from the center towards the cell walls, the cell plate grows until it merges with the cell walls at the periphery, and the Golgi membranes become the plasma membrane on either side of the new cell wall. This process is critical for the formation of the cell wall made of cellulose that separates the two daughter cells after mitosis.