Question

Organogenesis or morphogenesis in tissue culture is controlled / regulated by phytohormones. The credit of this important discovery goes to

• A. Skoog and miller (1957)
• B. Guha and Maheswar (1964)
• C. Calvin and Benson (1894)
• D. Halperin and Wetherail (1964)

Answer 1

Answer: (A)

Skoog and miller (1957)

• Organogenesis or morphogenesis is the regeneration of an organ from the undifferentiated mass of cells, which is best known as a callus.
• Skoog and Miller (1957) showed that an appropriate concentration of phytohormone auxin and cytokinin stimulates the morphogenesis or organogenesis.
• A higher concentration of auxin with cytokinin promotes cell division in shoots, while a higher concentration of cytokinin with auxin stimulates cell division in roots.

So, the correct answer is option A.