allery**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.
Keep practising Unit 8N: Ecosystem Services, Succession & Global Change
Browse all Unit 8N: Ecosystem Services, Succession & Global Change questions for AP Biology, or explore more Biology topics.
Related questions
In SEXUAL reproduction, the offspring inherit:After the tip of a young plant stem is cut off, the stem stops growing in length but new bA scientist observes thin, rectangular, tightly packed cells forming a single outer layer The increase in GIRTH (thickness) of a tree trunk is due to:Roots grow longer because of cell division in the:Which plant tissue is responsible for ACTIVE cell division (growth)?A group of cells of similar structure that work together to perform a specific function isThe outermost protective layer of the plant body is: