Question

The movement of water through the xylem depends on what process?

a) Transpiration
b) Photosynthesis
c) Respiration
d) Active transport
e) Phloem transport

Answer 1

The movement of water through the xylem is dependent on the process of transpiration, which is the evaporation of water at the leaf surface creating a tension that pulls water up from the roots. a) Transpiration

Step-by-step explanation:

The movement of water through the xylem depends on the process of transpiration. This is the loss of water from the plant through evaporation at the leaf surface, a key driver of water movement.

Transpiration causes a negative pressure (tension) which pulls water up from the roots through the xylem vessels and tracheids. The process is explained by the cohesion-tension theory, which describes how water molecules stick together (cohesion) and to the walls of xylem vessels (adhesion), allowing the tension necessary for water transport.