Question

Which hormone promotes cell division?

• A. Auxin
• B. Cytokinin
• C. ABA
• D. Ethylene Correct Answer: (B) Cytokinin

Hint:

This is one of the easiest etymological links to memorize in biology: Cytokinin drives Cytokinesis! Whenever a test question mentions rapid cell division, tissue culture proliferation, or breaking apical dominance to start fresh growth, look immediately for Cytokinin.

Answer 1

The Correct Option is B

Step 1: Look at the name itself.
Cytokinin gets its name from cytokinesis, which is the splitting of a cell during division. The name already points to cell division.

Step 2: Check its job.
Cytokinin is found where cells divide fast, like root tips and young buds. It pushes the cells to divide.

Step 3: Rule out the rest.
Auxin mainly stretches cells. ABA is a stress hormone that slows growth. Ethylene ripens fruit. None of these is the cell division hormone.

Step 4: Final choice.
The hormone that promotes cell division is cytokinin, option 2.
\[ \boxed{\text{Cytokinin}} \]