- A Rapid stem elongation and internode growth
- B Triggering of seed germination processes
- C Stomatal closure and dormancy
- D Acceleration of fruit ripening and softening
Correct answer: C. Stomatal closure and dormancy
Explanation: ABA is a stress hormone. It causes stomatal closure (water stress) and promotes seed/bud dormancy. Known as stress hormone.
Concept context
Phases of plant growth, the five classical plant hormones plus newer ones, photoperiodism, vernalization, and seed dormancy.