Q. 6-furfuryl amino purine, 2-4 dichlorophenoxy acetic acid and indole-3 acetic acid are examples respectively for
A) Synthetic auxin kinetin and natural auxin
B) Gibberellins, natural auxin and kinetin
C) Natural auxin, kinetin and synthetic auxin
D) Kinetin, synthetic auxin and natural auxin
Explanation
The first cytokinin was discovered from, degraded autoclaved herring sperm DNA by Miller et al. 1995. It is called kinetin (6-furfurly amino-purine). Kinetin does not occur naturally. Many synthetic auxins are also manufactured. The important ones are 2, 4, D (2, 4-dichlorophenoxy acetic acid). 2, 4, 5-(2, 4, 5-Trichlorophenoxyacetic acid) and Naphthalene acetic acid (NAA).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.