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Nature & Animals

Which consequence of a prolonged drought strongly inhibits capillary action within tree roots?

A)Increased soil particle surface tension
B)Decreased xylem water potential
C)Blocked aquaporins in root cells
D)Formation of root air embolisms

💡 Explanation

A drought causes root air embolisms, disrupting the continuous water column required for capillary action, because these block the xylem vessels. Therefore, water transport declines, rather than surface tension increases, because the critical path is pressure continuity.

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