In roots
A) the Casparian strip allows the back flow of water into the root cortex.
B) the endodermis prevents the loss of sucrose from the phloem.
C) ions move by diffusion through the living cells of the stele.
D) water and ions moving through root tissue cannot switch between the apoplastic and symplastic pathways.
E) the apoplastic pathway ensures the physiological control of water uptake by plants.

Question

Quizplus · Accepted Answer

The endodermis, with its Casparian strip, regulates the movement of substances into the vascular system, preventing the loss of sucrose from the phloem.

In Roots