[单选题]
The diagram below shows6/ jep6dvbzr 1 a simple apparatus which uses 37kzjnpo6p 0qqt*jd7b z/+gma porous pot to model water transport in plaoj/7n3gzzp d670 *jm tb +qqkpnts.
Why is a porous pot used to model water transport in the xylem?
A. It allows water molecules to flow down the capillary tube to represent water moving from leaves to roots.
B. It allows water to leave the pot through the pores, which represents water evaporating out of the stomata.
C. It represents the thick, lignified walls of xylem vessels.
D. It generates adhesion and cohesion for transporting water inside plants.
