Question

Which of the following hormone induces cell division?

• A. Auxin
• B. Gibberellin
• C. Cytokinin
• D. Trypsin

Answer 1

The correct option is C Cytokinin

Cytokinins stimulate cell division, even in non-meristematic cells, in presence of auxin. They are most abundant in the growing tissues which are active site of cell division, for example: root, embryos, fruits etc. This makes option C correct. Option A is incorrect as auxins are the growth hormones that cause cell division as well as cell expansion, thereby causing growth while cytokinins are not involved in cell expansion but only in cell division. Option B is incorrect as gibberellins cause cell elongation. Treatment with gibberellins causes bolting (stem elongation) and reverses dwarfism by increasing the intermodal length. Trypsin is a globular protein with 24kD and one polypeptide chain of 220 residues and serves as proteolytic enzyme (protein digesting enzyme). Option D is incorrect.

Thus, the correct answer is option C.