- A Stem elongation by loosening cell walls at the subapical meristem
- B Cell division and delays senescence
- C Climacteric fruit ripening coupled with ethylene release
- D Primary root elongation exclusively, with no effect on lateral shoots
Correct answer: B. Cell division and delays senescence
Explanation: Cytokinins promote cell division, prevent senescence (aging), and promote lateral bud growth. They work together with auxins.
Concept context
Phases of plant growth, the five classical plant hormones plus newer ones, photoperiodism, vernalization, and seed dormancy.