**Cytokinins** are best known for promoting:
ACell division (cytokinesis) and delay of leaf senescence
BStomatal closure under stress
CFruit ripening
DApical dominance
Answer & Solution
Correct answer: A. Cell division (cytokinesis) and delay of leaf senescence
Cytokinins (e.g. kinetin, zeatin) — first identified from coconut milk (Skoog). Promote cell division and shoot/lateral bud development. Delay leaf senescence (Richmond-Lang effect). Synthesised in roots, transported to shoots.
Related questions
The four characteristic events of a typical **sigmoid growth curve** are:**Hydroponics** is:Yellowing of **young leaves** (chlorosis of young leaves) suggests deficiency of which eleThe **'Triple Response'** of seedlings (inhibition of stem elongation, swelling of stem, hWhich is **NOT** correctly paired (hormone–physiological role)?The **Richmond-Lang effect** describes the action of:In the **Avena curvature test**, the angle of curvature of the decapitated coleoptile is:Calcium deficiency in plants causes: