NEET · BiologyHard
Which of the following statements accurately describes the structural arrangement of the Casparian strip in the endodermis of a root?
- A.It is composed of cellulose and is permeable to water
- B.It is a band of suberin deposition on the radial and tangential walls
- C.It is found only in the pericycle cells of the root
- D.It prevents the movement of water through the symplastic pathway
Show correct answer & step-by-step solution
Correct answer: B — It is a band of suberin deposition on the radial and tangential walls
Solution
- The endodermis is the innermost layer of the cortex in roots.
- The Casparian strip consists of water-impermeable suberin.
- This deposition occurs specifically on the radial and tangential walls of the endodermal cells.
- It forces water to move through the symplastic pathway by blocking the apoplastic route.
- Hence the answer is (B).
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