Practice question
Question
ABA induces stomatal closure mainly by causing:
Explanation
Correct option is C, K⁺ efflux. In STOMATA MOVEMENT problems like this, the accurate statement is K⁺ efflux; the others are common mix-ups. Not these: A) K⁺ influx; B) Cl⁻ influx; D) Water endosmosis. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.
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