The driving force that pushes the root tip through the soil is due primarily to
A)continuous cell division in the root cap at the tip of the root.
B)continuous cell division just behind the root cap in the center of the apical meristem.
C)elongation of cells behind the root apical meristem.
D)A and B only.
E)A, B, and C.

Question

Quizplus · Accepted Answer

The driving force that pushes the root tip through the soil is mainly due to the elongation of cells behind the root apical meristem. The apical meristem, located just behind the root cap, is responsible for continuous cell division, but it is the elongation of these newly formed cells that ultimately pushes the tip of the root through the soil. Choices A and B are partially correct because cell division is necessary for root growth, but it is not the primary driving force for pushing the root tip through the soil.

The Driving Force That Pushes the Root Tip Through the Soil