An Initial Cell in a Plant Apical Meristem Has a Cuboidal

An initial cell in a plant apical meristem has a cuboidal shape. Predict the orientation of microtubules beneath the cell membrane if that cell will differentiate into procambium and ultimately a xylem vessel.

A) Microtubules are arranged randomly around the cell.
B) Parallel microtubules are oriented in the direction the cell will eventually expand.
C) Rings of microtubules are oriented in the plane the cell will eventually expand.
D) Rings of microtubules are oriented at right angles to the direction the cell will eventually expand.