Biotechnology And Its Applications Question 2
Question: In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as:
(1) Differentiation
(2) Dedifferentiation
(3) Development
(4) Senescence
Show Answer
Answer: (2) Dedifferentiation
Explaination-
The phenomenon described, where leaf mesophyll cells are put in a culture medium to form callus, is called dedifferentiation. Dedifferentiation refers to the process by which specialized cells lose their specialized characteristics and revert to a more primitive or undifferentiated state. In tissue culture experiments, dedifferentiation allows the cells to regain their ability to divide and form a mass of undifferentiated cells called callus.
