Ecology and Evolution is one of the newer GATE papers, and for life science graduates it is where a strong rank is actually built. Forty six questions, eight major areas of the subject, and a marking scheme that rewards accuracy over guessing. On this page you get free GATE Ecology and Evolution sample papers built to the latest IIT pattern, each with worked solutions, covering only the subject core so you can drill the technical part on its own.
Official website: gate2026.iitg.ac.in
GATE Ecology and Evolution Sample Papers 2027
GATE Ecology and Evolution Sample Paper 1
GATE Ecology and Evolution Sample Paper 2
GATE Ecology and Evolution Sample Paper 3
GATE Ecology and Evolution Sample Paper 4
GATE Ecology and Evolution Sample Paper 5
GATE Ecology and Evolution Sample Paper 6
GATE Ecology and Evolution Sample Paper 7
GATE Ecology and Evolution Sample Paper 8
GATE Ecology and Evolution Sample Paper 9
GATE Ecology and Evolution Sample Paper 10
Download any of the GATE Ecology and Evolution sample papers above and solve it in one timed sitting of about 128 minutes, which is the share the subject core earns at the paper's overall pace. Each paper carries 46 questions worth 72 marks, split as 20 questions of 1 mark and 26 questions of 2 marks, exactly the way the subject part of the real Ecology and Evolution paper is built.
You can download these papers here on Collegedunia, and you should also check the official website gate2026.iitg.ac.in for the information brochure and the exam schedule before you plan your practice. Note that the organising IIT rotates each year, so the official domain changes with it, and the next GATE exam is expected around 14 February 2027.
- GATE Ecology and Evolution Sample Papers 2027
- GATE Ecology and Evolution Exam Pattern and Marks Distribution 2027
- GATE Ecology and Evolution Sample Papers - Why Recent Papers Matter Most
- GATE Ecology and Evolution Chapter Wise Weightage - High Scoring Topics to Focus in Sample Papers
- GATE Ecology and Evolution Sample Paper Video Solutions 2027 - Watch Before You Start Solving
- How to Use GATE Ecology and Evolution Sample Papers to Clear in First Attempt
- GATE Ecology and Evolution Negative Marking and Attempt Strategy
- GATE Ecology and Evolution 4 Week Preparation Plan Using Sample Papers
- FAQs on GATE Ecology and Evolution Sample Papers 2027
- Core questions: 46 questions worth 72 marks, split as 20 questions of 1 mark and 26 questions of 2 marks. This is the Ecology and Evolution subject core only, without General Aptitude.
- Time budget: The full paper allows 180 minutes for 65 questions, which is about 2.77 minutes per question, so the Ecology and Evolution core earns roughly 128 minutes.
- Marking scheme: Negative marking applies only to MCQs, at one third of the marks allotted. A wrong 1 mark MCQ costs 0.33 and a wrong 2 mark MCQ costs 0.67. MSQ and NAT questions carry no negative marking.
- Paper format: 65 questions worth 100 marks in 180 minutes. General Aptitude is 15 marks and the Ecology and Evolution subject is the other 85, of which about 72 marks are covered by these core sample papers.
- Mode: Computer based test, with an on-screen calculator. Your own calculator is not allowed.
- Conducting body: The IITs and IISc by rotation. Ecology and Evolution (EY) is one of the science stream GATE papers.
- Syllabus base: Fundamentals of Ecology, Population and Community Ecology, Ecosystems and Biogeochemical Cycles, Mechanisms of Evolution, Population and Quantitative Genetics, Speciation and Phylogeny, Behavioural Ecology, and Quantitative Ecology and Biostatistics. No General Aptitude in these papers.
GATE Ecology and Evolution Exam Pattern and Marks Distribution 2027
The GATE Ecology and Evolution paper carries the same overall shape as every branch, but the subject core is what these sample papers train you for. The structure below has held steady since the paper was introduced, so you can plan around it.
- Total paper: 65 questions worth 100 marks in 180 minutes, computer based, in English.
- Section split: General Aptitude 10 questions and 15 marks, and the Ecology and Evolution subject 55 questions and 85 marks. This is a science paper, so there is no separate Engineering Mathematics section, the quantitative work sits inside the subject itself.
- Core covered here: 46 questions and 72 marks, split as 20 questions of 1 mark and 26 questions of 2 marks. These sample papers deliberately leave out General Aptitude so you can focus on the Ecology and Evolution core.
- Question types: MCQ with four options, MSQ where more than one option can be right, and NAT where you type a number.
- Marking: Only MCQs are penalised, at one third of the question's marks. MSQ and NAT carry no penalty at all, so an unsure NAT is always worth a guess.
- Conducting body: The IITs and IISc by rotation, announced each year on the official website gate2026.iitg.ac.in. Ecology and Evolution is one of the science stream papers.
Key advice: The Ecology and Evolution core is 72 marks and it is broad, running from population dynamics to population genetics to phylogenetics and biostatistics. You cannot afford blind spots. A GATE Ecology and Evolution sample paper forces you across all eight areas in one sitting, which is the only honest test of whether your revision is even.
GATE Ecology and Evolution Sample Papers - Why Recent Papers Matter Most
GATE does release its question papers, which puts you in a better position than most exams. But the Ecology and Evolution paper has drifted in emphasis since 2015, and older sets do not reflect where the marks now sit.
- NAT and quantitative questions dominate the core: A large share of the 2 mark questions are Numerical Answer Type, where you solve fully and type a value, common in Hardy Weinberg allele frequencies, population growth rates and diversity indices. These carry no negative marking, so recent practice teaches you to attempt every one rather than skip.
- Quantitative and evolutionary genetics weight has grown: Population genetics, heritability, selection coefficients and phylogenetic reasoning now carry steady marks every year. Older papers under-represent them, so you can revise descriptive ecology for weeks and still be light on the maths heavy areas.
- The areas stay fixed, the emphasis rotates: Fundamentals of Ecology, Population and Community Ecology, Ecosystems, Mechanisms of Evolution, Quantitative Genetics, Speciation and Phylogeny, Behavioural Ecology and Biostatistics are always present, but the split between them shifts year to year. Solving a spread of recent GATE Ecology and Evolution sample papers is the only way to feel that balance.
GATE Ecology and Evolution Chapter Wise Weightage - High Scoring Topics to Focus in Sample Papers
The official EY syllabus groups the subject into a set of large areas. The 46 core questions spread across them with ecology and evolutionary genetics carrying the most. The table below shows how our sample papers distribute them.
| Branch | Questions | Difficulty | What to Watch For |
|---|---|---|---|
| Fundamentals of Ecology | 6 | Easy to Moderate | Levels of organisation, abiotic factors, niche and Liebig's law of the minimum, adaptations and biomes. Concept heavy and high yield, so clean definitions and simple recall bank quick marks. |
| Population and Community Ecology | 6 | Moderate | Exponential and logistic growth, life tables, r and K selection, competition, predation, and succession. A frequent NAT source, so practise growth rate and survivorship calculations until they are automatic. |
| Ecosystems and Biogeochemical Cycles | 6 | Moderate | Energy flow, trophic levels, productivity, nutrient cycling of carbon, nitrogen and phosphorus. Watch the units on productivity and the direction of each cycle, easy to lose on careless labelling. |
| Mechanisms of Evolution | 6 | Moderate | Natural selection, genetic drift, gene flow, mutation and non random mating. Conceptual with short numericals on selection and fitness, so keep the four evolutionary forces clearly separated. |
| Population and Quantitative Genetics | 6 | Moderate to Hard | Hardy Weinberg equilibrium, allele and genotype frequencies, heritability, linkage and selection coefficients. The most calculation heavy area, so weak algebra costs you the most marks here. |
| Speciation, Phylogeny and Macroevolution | 6 | Moderate to Hard | Species concepts, isolating mechanisms, allopatric and sympatric speciation, tree reading, parsimony and molecular clocks. Phylogenetic tree questions repeat, so learn to read clades and character states quickly. |
| Behavioural Ecology | 5 | Moderate | Foraging theory, mating systems, sexual selection, altruism, kin selection and Hamilton's rule. Reasoning based with the odd cost benefit numerical, so the logic matters more than memory. |
| Quantitative Ecology, Biostatistics and Mathematics | 5 | Hard | Diversity indices, probability, hypothesis testing, correlation and regression, and basic matrix and calculus tools. Small weight for the effort, so target the diversity index and statistics problems that repeat. |
Note: Do not let Behavioural Ecology and Ecosystems slide just because they sit in the middle. Together they are 11 questions and often more than 15 marks, the concepts are standard, and they need far less preparation time per mark than population genetics or biostatistics. In a GATE Ecology and Evolution sample paper these are the areas where careful candidates finish fast and bank certain marks.
GATE Ecology and Evolution Sample Paper Video Solutions 2027 - Watch Before You Start Solving
Ecology and Evolution core questions look routine and still cost people marks, usually through a wrong allele frequency in a Hardy Weinberg problem, a missed unit in a productivity value, or a misread branch on a phylogenetic tree. Watching a set solved shows you where the time and the errors actually go.
The walkthrough below works through GATE Ecology and Evolution previous year questions across the main areas. Watch it once, then start on Sample Paper 1 and see how many of the same patterns you recognise.
Watch:
Source: GATE Ecology and Evolution previous year question papers and video solutions, covering Ecology, Evolution and Quantitative Ecology (YouTube)
How to Use GATE Ecology and Evolution Sample Papers to Clear in First Attempt
The Ecology and Evolution core rewards two things, breadth and clean quantitative work. Your preparation should push you across all eight areas while cutting the small slips that cost you sure marks.
- Time every paper at 128 minutes. That is the pace the Ecology and Evolution core earns inside the full 180. If you routinely take 160, you are borrowing the time General Aptitude will need on exam day.
- Attempt every NAT. A large part of the 2 mark load is Numerical Answer Type with no negative marking, so a solved value or even a careful estimate is always better than a blank.
- Log why you got it wrong, not just what. Wrong allele frequency in a Hardy Weinberg problem, missed unit in a productivity value, or genuinely did not know the concept. Those three need three different fixes.
- Balance your revision by area. A steady 60 percent can hide the fact that every miss is Quantitative Genetics or Biostatistics. Track score per area, not just the total.
- Do not skip the 1 mark questions. Twenty of them carry 20 marks between them and take the least time per mark in the paper.
- Rework each paper's genetics section. Population and Quantitative Genetics is calculation heavy and repeats every year, so a second pass there moves your score more than anywhere else.
GATE Ecology and Evolution Negative Marking and Attempt Strategy
GATE's marking scheme is more forgiving than most students assume, but only if you know which question type you are looking at. Getting this wrong costs marks that nothing else will win back.
- Only MCQs are penalised. The deduction is one third of the marks allotted, so a wrong 1 mark MCQ costs 0.33 and a wrong 2 mark MCQ costs 0.67.
- Never leave a NAT blank. Numerical Answer Type questions carry no negative marking, and they make up a big share of the Ecology and Evolution core in population growth, allele frequencies and diversity indices. An unsure value is free, and a blank is a guaranteed zero.
- MSQ needs all or nothing. Multiple Select Questions carry no penalty either, but partial ticks earn nothing. Only mark the options you are sure of, and remember there may be just one.
- On MCQs, eliminate before you guess. A blind guess across four options is a losing trade at one third negative. Once two options are gone, on a 2 mark genetics or evolution MCQ, it turns clearly in your favour.
GATE Ecology and Evolution 4 Week Preparation Plan Using Sample Papers
- Week 1: Revise Fundamentals of Ecology and Population and Community Ecology, covering niche, biomes and adaptations, then exponential and logistic growth, life tables and species interactions. Solve Sample Papers 1 and 2 at 128 minutes each and start your error log.
- Week 2: Work through Ecosystems and Biogeochemical Cycles and Mechanisms of Evolution, especially energy flow, nutrient cycling, natural selection, drift and gene flow. Solve Sample Papers 3, 4 and 5.
- Week 3: Cover Population and Quantitative Genetics, Speciation and Phylogeny, and Behavioural Ecology, including Hardy Weinberg, heritability, species concepts, tree reading and kin selection. Solve Sample Papers 6, 7 and 8.
- Week 4: Revise Quantitative Ecology and Biostatistics with diversity indices, probability, hypothesis testing and regression, then solve Sample Papers 9 and 10 back to back to check your pace holds across all eight areas. Revise only your error log and keep the last 2 days light, with no new topics.
FAQs on GATE Ecology and Evolution Sample Papers 2027
Ques.How many questions and marks does the GATE Ecology and Evolution core carry in these sample papers?
Ans.Each GATE Ecology and Evolution sample paper carries 46 questions worth 72 marks, made up of 20 questions of 1 mark and 26 questions of 2 marks. This is the Ecology and Evolution subject core only, so it leaves out General Aptitude, which is a separate part. In the real exam the full paper is 65 questions and 100 marks, with General Aptitude taking 15 marks.
Ques.Is there negative marking in the GATE Ecology and Evolution paper?
Ans.Only on MCQs, and the deduction is one third of the marks allotted to that question. So a wrong 1 mark MCQ costs you 0.33 and a wrong 2 mark MCQ costs 0.67. Multiple Select Questions and Numerical Answer Type questions carry no negative marking at all, which matters a lot in Ecology and Evolution because so much of the core is NAT across population growth, genetics and biostatistics. Never leave a NAT question blank.
Ques.How much time should I spend on the Ecology and Evolution core in the real exam?
Ans.Budget about 128 minutes for the 46 core questions. The paper gives 180 minutes for 65 questions, which is roughly 2.77 minutes per question, so 46 Ecology and Evolution core questions earn about 128 minutes. That leaves the remaining time for General Aptitude. Practising a full GATE Ecology and Evolution sample paper at this pace is the best way to keep that balance under real pressure.
Ques.Which areas carry the most weight in the GATE Ecology and Evolution paper?
Ans.Fundamentals of Ecology, Population and Community Ecology, Ecosystems, Mechanisms of Evolution, Population and Quantitative Genetics, and Speciation and Phylogeny are the largest blocks, each around six questions. Behavioural Ecology and Quantitative Ecology with Biostatistics come next. Our sample papers spread the 46 questions across all eight so you are never blindsided by an area you skipped.
Ques.Do these sample papers include General Aptitude?
Ans.No. These GATE Ecology and Evolution sample papers cover only the subject core of 46 questions and 72 marks. General Aptitude is a shared part of the full paper and is provided separately, so you can drill the Ecology and Evolution core on its own without diluting your practice. This is a science paper, so there is no separate Engineering Mathematics section either.
Ques.Are these GATE Ecology and Evolution sample papers the same as previous year papers?
Ans.No. GATE does publish its past papers, and you should solve those too. These are original questions written to the current pattern, with 46 core questions in 128 minutes and the 20 plus 26 mark split, so you get fresh practice once you have exhausted the official sets. They also weight NAT questions, quantitative genetics and biostatistics the way recent Ecology and Evolution papers do, which older past papers under-represent.
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