Question

Cellular totipotency was demonstrated by

• A. Theodore Schwann
• B. A.V. Leeuwenhoek
• C. F.C. Steward
• D. Robert Hooke

Answer 1

The correct option is C F.C. Steward

Cellular totipotency was demonstrated by F.C Stewards in the year 1957. He took 2 mg pieces from the phloem of carrot roots. It was placed these explants in liquid culture medium containing coconut milk. There were an active growth and division of cells. After shaking the cells tend to form clusters. Clusters differentiated and formed initials of roots. In a semisolid medium, each developed shoot and gave rise to a plantlet or a small plant.

So, the correct answer is option C.