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Nature & Animals

Which outcome occurs when a root's endodermis casparian strip fails during drought?

A)Uncontrolled water and ion leakage
B)Active transport nutrient concentration increases
C)Reduced xylem structural wall pressure
D)Phloem turgor pressure subsequently increases

💡 Explanation

Uncontrolled leakage emerges because the casparian strip normally directs water and ion flow via cell membranes’ selective transport, thereby maintaining the root's selective uptake; therefore leakage increases, rather than active pressure increases.

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