Difficulty distribution
How the classified questions are distributed by difficulty.
3questions
Not classified
3
100%
Ecosystem - Botany - Biology Previous Year Questions
Practice Ecosystem - Botany - Biology previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
3Papers
3Years
3Questions
1Topics
Ecosystem question pattern
Every graph below is calculated only from this selection.
Questions by year
Year-wise coverage for Ecosystem. Each bar uses a separate theme-derived color.
Question type distribution
MCQ, numerical, multiple-select and other formats found in these papers.
3questions
MCQ
3
100%
Subject weightage
Top subjects by unique question coverage.
Most asked topics
Top topics across the included previous year papers.
Subtopic coverage
Top subtopics inside this exact selection.
Paper coverage
Question coverage for the most populated papers. Every active PYP paper remains listed below.
Included previous year papers
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| IAT IISER 2025 | 2025 | 1 | View paper |
| IAT IISER 2022 | 2022 | 1 | View paper |
| IAT IISER 2020 | 2020 | 1 | View paper |
All Ecosystem previous year questions
Practice every matching question in batches of 20, with every available option.
2020 · Biology · Botany · Ecosystem
IAT IISER 2020
The following word diagram depicts a food chain in a forest.
$$\text { Trees (Aspen, willow) } \rightarrow \text { Herbivore (Elk) } \rightarrow \text { Predator (Wolf) }$$
Which is the most likely outcome of depletion in predator population?
2022 · Biology · Botany · Ecosystem
IAT IISER 2022
Consider the following biomes: Tropical Rainforest $(P)$; Tundra $(Q)$; Desert $(R)$ and Coastal zone $(S)$. The most probable order of Net Primary Productivity of these biomes is
2025 · Biology · Botany · Ecosystem
IAT IISER 2025