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MHT CET202013 Oct 2020Evening ShiftChemistryAlcohols Phenols and EthersActual

Which of the following phenols is isolated from defensive secretion of grasshopper species?

Options

  1. A4 - Methylphenol
  2. BBenzene-1, 3- diol
  3. C2, 5 - dichlorophenol
  4. DPhenol

Correct answer

C. 2, 5 - dichlorophenol

Step-by-step solution

The defensive froth emitted by the grasshopper Romalea microptera contains several odorous compounds (phenols, terpenes, benzoquinone), including a chlorinated aromatic compound, 2,5-dichlorophenol. This compound, which is repellent to ants and therefore defensively useful to the grasshopper, probably stems from herbicide or herbicide derivative ingested by the insect with its diet. Although there is precedent for the defensive employ by one species of chemical agents produced by another, no instance was known invo

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