In the root cells _ pathway becomes discontinuous in the endodermis due to the presence of casparian strips.
Correct answer: B. Apoplast
- A. Tonoplast
- B. Apoplast
- C. Symplast
- D. Vacuolar
Explanation
In the root cells, the apoplast pathway becomes discontinuous in the endodermis due to the presence of Casparian strips. The Casparian strips are waxy barriers made of suberin that are present in the radial and transverse walls of endodermal cells. They block the apoplastic movement of water, nutrients, and ions, forcing substances to enter the symplast pathway by crossing the cell membranes of the endodermal cells.
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