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Answer: 4. Endodermis

Casparian strips are waterproof bands of suberin on the radial and tangential walls of endodermal cells.

They force water and minerals to pass through the cell membrane, so the plant can control what enters the stele. Epidermis, cortex and pericycle lack them.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report
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