1.

Phototropism in shoots is attributed to or phototropic movements are due to  [MP PMT 1987; BHU 1979, 1981; AMU 1997; JKCMEE 2000; APMEE 1996]

A. Auxin
B. Gibberellins
C. Cytokinin
D. Abscisic acid
Answer» B. Gibberellins


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