Ques. 1AIPMT 2003
Coconut milk factor is
- abscisic acid
- an auxin
- a gibberellin
- cytokinin
Answer
(4) cytokinin
Solution
As per NCERT, cytokinins were discovered as kinetin from autoclaved herring sperm DNA; the search for substances with cytokinin-like activity led to the isolation of zeatin from corn kernels and coconut milk.
∵ Coconut milk (liquid endosperm) promotes cell division in tissue culture, which is the characteristic action of a cytokinin.
∴ Coconut milk factor is a cytokinin.
Answer: (4)