Multiple choice Who among the following isolated cytokinins? Muller and his co-workers Miller and his co-workers Bentham and Hooker Went and his co-workers Reveal answer Fill a bubble to check yourself B Correct answer Explanation Cytokinins were first isolated by Miller and his co-workers in the 1950s from coconut milk and other plant tissues. They discovered these cell division-promoting hormones through their research on plant growth substances.