IMMUNOLOGY

Detailed explanation-1: -Coconut milk factor is a cytokinin. Kinetin does not occur naturally in plants. Search for natural substances with cytokinin-like activities led to the isolation of zeatin from corn-kernels and coconut milk.

Detailed explanation-2: -Coconut milk factor is cytokinin.

Detailed explanation-3: -Kinetin is an artificial, aromatic cytokinin and benzyladenine is an example of a naturally occurring aromatic cytokinin. Thidiazuron is a diphenylurea-type cytokinin.

Detailed explanation-4: -These cytokinins include the abundant natural cytokinins trans-zeatin (tZ) and isopentyladenine (iP), as well as dihydrozeatin, benzyladenine, kinetin, and in some cases cis-zeatin. Benzyladenine and kinetin were initially produced synthetically but also occur at low levels naturally in some species.