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  4. IAA is derived from or which of the following is involved in the synthesis of a plant hormone IAA and Vasoconstrides cerotonin?

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Q. IAA is derived from or which of the following is involved in the synthesis of a plant hormone IAA and Vasoconstrides cerotonin?

Delhi UMET/DPMTDelhi UMET/DPMT 2007Biomolecules

Solution:

Auxin (Indole Acetic Acid IAA) is the derivative of tryptophan. Tyrosine is an aromatic amino acid. It is a hydroxylated derivative of phenyialanine. Phenylalanine is an aromatic amino acid.