NEET BIOLOGY

Detailed explanation-1: -Apoplastic water movement beyond the cortex is blocked by the Casparian strip of endodermal cells. Hence, the symplastic route is utilised to deliver water and ions beyond the cortex.

Detailed explanation-2: -The movement of water in the apoplastic pathway doesn’t involve the crossing of the cell membrane. It doesn’t provide any barrier to the movement of water and the movement is gradient-dependent.

Detailed explanation-3: -In the apoplast pathway (apoplastic route), water moves through the spaces between the cells and in the cells walls themselves. In the symplast pathway (symplastic route), water passes from cytoplasm to cytoplasm through plasmodesmata (Figure 17.1.

Detailed explanation-4: -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.