STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 13. Plant growth and development4 Marks
MCQ
Which hormone was first isolated from human urine?
✓
Auxin
B
$ABA$
C
Ethylene
D
Gibberellic acid
✓
Answer
Correct option: A.
Auxin
a Auxin (derived from Greek work auxin, which means to grow) was first isolated from human urine. Kogl and Heagen Smith ($1931$) isolated three chemicals from human urine and named them as auxin
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