1.

The bending of the stem of a plant towards a source of light is caused by the action of a phytohormone known as : (a) abscisic acid (b) auxin (c) gibberellins (d) cytokinin

Answer»

The bending of the stem of a plant towards a source of light is caused by the action of a phytohormone known as :

(a) abscisic acid

(b) auxin

(c) gibberellins

(d) cytokinin



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