question_answer 45)

Give the location of casparian strip and explain its role in the water movement.

Answer:

                Casparian strip is found in the endodermis. The walls of this layer are impervious to waterbecause of the presence of suberin. So, it does not allow movement of water across theendodermis, rather is forced to enter the symplast pathway through cell membranes andreaches the xylem. Casparian strips and passage cells in the endodermis  A. Endodermal cell to shown casparian strip B. and C. Endodermal cells in TS P=Passage cell Symplastic and apoplastic pathways of water and ion absorption and movement in roots