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Practice Plant-pathogen Interactions and Defence Signalling - Plant Pathology - Life Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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Compare question counts across years.
How the classified questions are distributed by difficulty.
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Question coverage for the most populated papers. Every active PYP paper remains listed below.
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| Paper name | Year | Attempt | |
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Life Sciences (XL) 20232023 | 2023 |
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Life Sciences (XL) 20212021 | 2021 | |
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Life Sciences (XL) 20192019 | 2019 | |
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Life Sciences (XL) 20172017 | 2017 | |
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Life Sciences (XL) 20162016 | 2016 | |
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Life Sciences (XL) 20142014 | 2014 | |
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Practice every matching question in batches of 20, with every available option.
Although Pseudomonas syringae infection in plants is actively inhibited by the endogenous salicylic acid (SA) of host origin, a successful infection is still established because the bacterium secretes coronatine, an effector molecule. Which one of the following best describes the mode of action of coronatine?