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Where do the casparian bands occur?

1. Epidermis
2. Endodermis
3. Pericycle
4. Phloem

Correct answer: Endodermis

Solution

Casparian bands are found in the endodermis of roots, where they block apoplastic flow and force water and minerals through cell membranes. This selective barrier helps regulate what enters the vascular tissues.

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