Phytoalexins are secreted by plants in response to fungal reaction. These compounds are generally

Proteins

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Glycoproteins

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Phenolic compounds

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Lipids

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Solution

The correct option is B Phenolic compounds
Phytoalexins are low molecular weight, phenolic, antimicrobial compounds synthesized and accumulated in plants in response to extrinsic stress such as microbial infection. Phytoalexins have antifungal properties and are often pathogen-specific in their toxicity. e.g., medicarpin, rishitin, camalexin.
Thus, the correct answer is option C.

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