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Get Answers to all your Questions
Dr.F went noted that if coleoptile were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly- cut - coleoptile stumps. Of what significance is this experiment ?
- Option 1)
It made possible the isolation and exact identification of auxin.
- Option 2)
It is the basis for quantitive determination of small amounts of growth -promoting substances.
- Option 3)
It supports the hypothesis that IAA is auxin.
- Option 4)
It demonstartaed polar movement of auxins.
Answers (1)
As learnt
Auxin -
Tryptophan is the precursor of Indole acetic acid (IAA, natural auxin). Important biassay of auxins are Avena curvature test and cross root inhibition test.
- wherein
Discovered by Went.
As discussed in
Leghaemoglobin -
The red pigment of the nodules produced as a result of Rhizobium legume complex
- wherein
It is oxygen scanvenger and protects nitrogen fixing enzyme nitrogenase from
Option 1)
It made possible the isolation and exact identification of auxin.
This is incorrect option
Option 2)
It is the basis for quantitive determination of small amounts of growth -promoting substances.
This is correct option
Option 3)
It supports the hypothesis that IAA is auxin.
This is incorrect option
Option 4)
It demonstartaed polar movement of auxins.
This is incorrect option
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