Correct Answer - B
Ratio of cytokinin to auxin controls cell differentiation. If there is more cytokmm than auxm, shoot buds develop. Relatively more auxin than cytokinins leads to the development of roots Abscisic Acid (ABA) is known as natural plant growth inhibitor. Gibberellin . stimulates stem elongation, leaf expansion, boltmg, flowermg, etc. Ethylene is a fruit npening hormone
