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Practice question

Question

NPA inhibits auxin transport by blocking:

Options

Choose one · Correct answer highlighted

Explanation

Correct option is C, Auxin efflux. In Auxin Phytohormone problems like this, the accurate statement is Auxin efflux; the others are common mix-ups. Not these: A) Auxin synthesis; B) Auxin influx; D) Auxin degradation. Tissue transport questions usually turn on xylem vs phloem, living vs dead cells, or source vs sink.