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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.
Every graph below is calculated only from this selection.
Year-wise coverage for Plant-pathogen Interactions and Defence Signalling. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
MCQ, numerical, multiple-select and other formats found in these papers.
Top subjects by unique question coverage.
Top topics across the included previous year papers.
Top subtopics inside this exact selection.
Question coverage for the most populated papers. Every active PYP paper remains listed below.
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| Life Sciences (XL) 2023 | 2023 | 1 | View paper |
| Life Sciences (XL) 2021 | 2021 | 1 | View paper |
| Life Sciences (XL) 2019 | 2019 | 1 | View paper |
| Life Sciences (XL) 2017 | 2017 | 1 | View paper |
| Life Sciences (XL) 2016 | 2016 | 1 | View paper |
| Life Sciences (XL) 2014 | 2014 | 1 | View paper |
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?