Difficulty distribution
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Practice Fundamentals - Evolution - Ecology and Evolution previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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Year-wise coverage for Fundamentals. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
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| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| Ecology and Evolution (EY) 2026 | 2026 | 4 | View paper |
| Ecology and Evolution (EY) 2025 | 2025 | 4 | View paper |
| Ecology and Evolution (EY) 2024 | 2024 | 1 | View paper |
| Ecology and Evolution (EY) 2023 | 2023 | 3 | View paper |
| Ecology and Evolution (EY) 2022 | 2022 | 3 | View paper |
| Ecology and Evolution (EY) 2021 | 2021 | 5 | View paper |
| Ecology and Evolution (EY) 2020 | 2020 | 4 | View paper |
| Ecology and Evolution (EY) 2019 | 2019 | 4 | View paper |
| Ecology and Evolution (EY) 2018 | 2018 | 5 | View paper |
| Ecology and Evolution (EY) 2016 | 2016 | 2 | View paper |
| Ecology and Evolution (EY) 2014 | 2014 | 5 | View paper |
Practice every matching question in batches of 20, with every available option.
Death feigning behaviour (i.e., pretending to be dead when attacked) is found in snakes and millipedes. This similarity in behaviour between snakes and millipedes is an example of
Which of the following conditions is NOT necessary for evolution by natural selection?

Identify the graph in which natural selection on beak size is LEAST likely to be occurring? For each of the graphs, the slope of the regression line and the associated p-value is given.

Moth ears typically consist of a membranous eardrum backed by an air cavity. Ears in different phylogenetic groups of moths have evolved on different body parts. Moth ears are thus best described as
The pedigree below details a late onset genetic disease among humans. Males are represented as squares and females as circles. Individuals with the disease are depicted as black, and those without it are depicted as white. Which of the following best describes the pattern of inheritance of the disease-causing gene?


While developing his theory of evolution by natural selection, Charles Darwin was influenced by the work of
Garter snakes have evolved resistance to the poisonous secretions of the rough-skinned newts. The following figure describes poison production in newts and the resistance (measured as amount of poison tolerated) in garter snakes in three different geographical areas. Given this information, which of the following statements is correct regarding the evolution of poison resistance in garter snakes?

Which of the following criteria is used to define species under the biological species concept?
In a nocturnal moth species (X), individuals with longer antennae have smaller eyes. This indicates a sensory trade-off. In a closely related but diurnal moth species (Y), individuals exhibit the same obligate sensory trade-off. Which of the following figures describes the relationship between these two traits in moth species Y, if it relies more on vision than olfaction?

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