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Life Sciences & Medicine

If a plant experiences herbivore damage, which consequence follows due to induced phytoalexin production?

A)Increased photosynthetic efficiency occurs
B)Localized cell death protects tissue
C)Accelerated water uptake improves turgor
D)Enhanced nutrient absorption improves growth

💡 Explanation

Phytoalexins are antimicrobial and antioxidative compounds synthesized by plants in response to stress; their accumulation leads to localized cell death, limiting pathogen spread, because the hypersensitive response sacrifices infected cells rather than allowing systemic infection. Therefore localized cell death protects the plant tissue, rather than enhancing photosynthesis, water uptake, or nutrient absorption.

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