Scientists who isolated auxins from the coleoptiles of Avena and from human urine are _________ respectively.
A
Went and Darwin
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B
Went and Kogl
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C
Boysen-Jensen and Paul
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D
Kogl and Smith
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Solution
The correct option is D Kogl and Smith F.W. Went first isolated auxins from Avena coleoptile tips into agar blocks. Kogl and Smith isolated auxins first from human urine.