The main purpose of the Casparian strip in plant roots is
Question and options
The main purpose of the Casparian strip in plant roots is
- Water absorption
- Nutrient uptake
- Regulation of gas exchange
- Control of ions entering the vascular system
Answer and explanation
Correct answer: D - Control of ions entering the vascular system
The suberised Casparian strip in the endodermis blocks the apoplastic path, forcing water and ions through cell membranes so the plant controls which ions enter the vascular tissue.
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