Question

Correct chronological order during callus formation is

• A. Explant $\to$ Cell division $\to$ Callus $\to$ Addition of Cytokinin $\to$ Cells acquire meristematic property
• B. Callus $\to$ Explant $\to$ Cell division $\to$ Addition of Cytokinin $\to$ Cells acquire meristematic property
• C. Callus $\to$ Cell division $\to$ Explant $\to$ Addition of Cytokinin $\to$ Cells acquire meristematic property
• D. Explant $\to$ Callus $\to$ Cell division $\to$ Addition of Cytokinin $\to$ Cells acquire meristematic property.

Answer 1

The correct option is A Explant $\to$ Cell division $\to$ Callus $\to$ Addition of Cytokinin $\to$ Cells acquire meristematic property

In callus culture, a plant tissue or an explant is taken and is introduced into the medium for rapid cell division. It forms callus and further addition of phytohormones like cytokinin in required amounts will result in meristematic activity.