Practice question

MCQ

Question

When a plant is infected by a pathogen at one site, the distal parts of the plant and neighboring plants develop increased resistance to subsequent pathogen attack. Which of the following molecules mediates this long-distance signal?

Options

Choose one · Correct answer highlighted

Nitric oxide Ethylene Jasmonic acid and its derivatives Salicylic acid and its derivatives Correct

Explanation

Understanding photosynthetic regulation reveals light harvesting and carbon fixation coordinate energy flow. Therefore Salicylic acid and its derivatives is correct because it supports efficient energy conversion, which underpins key processes in plant biology.

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