Question
Biology Question on Transport in Plants
In apoplast pathway, water moves exclusively through the
A
plasmodesmata
B
cell walls
C
intercellular spaces
D
both (b) and (c)
Answer
both (b) and (c)
Explanation
Solution
Apoplast pathway consists of non-living parts of plant body i.e., cell walls and intercellular spaces. In apoplast pathway, water passes from root hair to xylem through the walls of intervening cells without crossing any membrane or cytoplasm. The pathway provides the least resistance to movement of water. However, it is interrupted by the presence of impermeable ligno-suberin Casparian strips in the walls of endodermal cells.