Question

Generally callus produced during tissue culture is a mass of .............. cells.

• A. sclerenchyma
• B. collenchyma
• C. parenchyma
• D. chlorenchyma

Hint:

Parenchyma cells are undifferentiated and play a crucial role in tissue culture, as they can divide and form various plant tissues.

Answer 1

The Correct Option is C

Step 1: Understanding callus formation.
During tissue culture, callus formation involves undifferentiated plant cells that proliferate and form a mass of parenchyma cells. These cells are totipotent and can differentiate into various plant tissues.
Step 2: Analyzing the options.
(A) sclerenchyma: Incorrect, sclerenchyma cells are specialized for structural support and do not form callus.
(B) collenchyma: Incorrect, collenchyma cells provide support but are not the primary cells in callus formation.
(C) parenchyma: Correct, parenchyma cells are the primary cells that form the callus in tissue culture.
(D) chlorenchyma: Incorrect, chlorenchyma cells are specialized for photosynthesis and do not form callus.
Step 3: Conclusion.
The correct answer is (C) parenchyma, as callus is primarily composed of parenchyma cells.