Difficulty distribution
How the classified questions are distributed by difficulty.
24questions
Not classified
24
100%
Zoology - Biology Previous Year Questions
Practice Zoology - Biology previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
5Papers
5Years
24Questions
1Topics
Zoology question pattern
Every graph below is calculated only from this selection.
Questions by year
Year-wise coverage for Zoology. Each bar uses a separate theme-derived color.
Question type distribution
MCQ, numerical, multiple-select and other formats found in these papers.
24questions
Multiple Choices
24
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.
Browse by subtopics
Open a focused page built from the same verified paper data.
Human Health And Diseases
Explore previous-paper coverage, trends and focused practice for Human Health And Diseases.
Animal Kingdom
Explore previous-paper coverage, trends and focused practice for Animal Kingdom.
Locomotion And Movement
Explore previous-paper coverage, trends and focused practice for Locomotion And Movement.
Digestion And Absorption
Explore previous-paper coverage, trends and focused practice for Digestion And Absorption.
Excretory Products And Their Elimination
Explore previous-paper coverage, trends and focused practice for Excretory Products And Their Elimination.
Breathing And Exchange Of Gases
Explore previous-paper coverage, trends and focused practice for Breathing And Exchange Of Gases.
Reproduction In Organisms
Explore previous-paper coverage, trends and focused practice for Reproduction In Organisms.
Neural Control And Coordination
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Body Fluids And Its Circulation
Explore previous-paper coverage, trends and focused practice for Body Fluids And Its Circulation.
Chemical Coordination And Integration
Explore previous-paper coverage, trends and focused practice for Chemical Coordination And Integration.
Structural Organisation In Animals
Explore previous-paper coverage, trends and focused practice for Structural Organisation In Animals.
Human Reproduction
Explore previous-paper coverage, trends and focused practice for Human Reproduction.
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 | 4 | View paper |
| IAT IISER 2024 | 2024 | 5 | View paper |
| IAT IISER 2023 | 2023 | 4 | View paper |
| IAT IISER 2022 | 2022 | 5 | View paper |
| IAT IISER 2020 | 2020 | 6 | View paper |
Sample previous year questions
A varied preview from the papers represented in this selection, with every available option.
2020 · Biology · Zoology · Digestion And Absorption
IAT IISER 2020
Which of the following products are expected when lipase acts on diglycerides?
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2022 · Biology · Zoology · Neural Control And Coordination
IAT IISER 2022
Interneurons play an important role in the execution of spinal cord-mediated reflex action. Where are these interneurons located?
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2023 · Biology · Zoology · Human Health And Diseases
IAT IISER 2023
For which one of the following diseases does the causative agent require the splicing of their hnRNA to generate mature mRNA?
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2024 · Biology · Zoology · Human Health And Diseases
IAT IISER 2024
$$\text { Match the list of conditions with the list of affected physiological processes. }$$
| Column I | Column II | ||
|---|---|---|---|
| P | Allergy | i | Excess secretion of growth hormone |
| Q | Uremia | ii | Exaggerated immune response to environmental substances |
| R | Myasthenia gravis | iii | Autoimmune disorder affecting the neuromuscular junction |
| S | Acromegaly | iv | Malfunctioning of kidneys which can lead to urea accumulation in the blood |
Which of the following combinations is correct?
2025 · Biology · Zoology · Breathing And Exchange Of Gases
IAT IISER 2025
Which one of the following conditions will favour maximum dissociation of oxygen from the oxyhaemoglobin in the tissues?
2020 · Biology · Zoology · Human Health And Diseases
IAT IISER 2020
Which of the following is the correct description of interferon?
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