- A Inhibiting cell division in the apical meristem entirely
- B Stimulating cell elongation and division in the stem internodes
- C Causing abscission of the existing leaves on the rosette
- D Triggering immediate seed dormancy in the same plant
Correct answer: B. Stimulating cell elongation and division in the stem internodes
Explanation: Gibberellins promote bolting by stimulating both cell elongation and cell division in stem internodes, causing the characteristic rapid increase in stem length seen in rosette plants before flowering.
Concept context
Phases of plant growth, the five classical plant hormones plus newer ones, photoperiodism, vernalization, and seed dormancy.