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# Natural plant hormones were isolated for the first time form

$\begin{array}{1 1}(A)\;\text{Human urine and rice plant}\\(B)\;\text{Human urine and corn germ oil}\\(C)\;\text{Rice plant,spinach leaves and cotton fruits}\\(D)\;\text{Gibberella,spinach leaves and avena coleoptiles}\end{array}$

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Natural plant hormones were isolated for the first time form human urine and corn germ oil
Hence (B) is the correct answer.
answered Apr 9, 2014