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Plant Growth and Mineral Nutrition — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYPlant Growth and Mineral Nutrition5 Marks
Question
Discuss about natural Auxin.
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Answer

  1. F.W. Went named the growth promoting substance as Auxin.
  2. Auxin was also isolated from urine of patient of pellagra.
  3. Indole 3 acetic acid was first hormone discovered in plants.
  4. IAA is most common and natural hormone synthesized at growing tips and responsible for cell elongation.
  5. It is synthesized from tryptophan and shows polar transport – Basipetal transport.

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