Free online practice test
IISER IAT Biology Mock Test 1
IISER Aptitude Test 2026
Focus on Biology with 15 original questions in one dedicated practice session.
Syllabus-checked original practice
Mapped to the official IAT syllabus and answer-checked on 31 August 2026.
View official pattern sourceTest-day essentials
Know before you start
- The timer starts as soon as you click "Start test" and the test auto-submits when time runs out.
- Mark questions for review and return to them while their section or timing group is still open.
- Your answers and timer deadline are saved on this device, so a refresh can resume safely.
- After submitting, review section and topic scores, explanations, and source links.
About this IISER IAT Biology sectional test
This sectional test isolates Biology from the IISER IAT IAT pattern, so you can drill it on its own instead of only meeting it inside the full mock. It draws 15 original practice questions across 15 distinct topics, syllabus-checked the same as our full mocks.
Topics covered
Blood groups
1 question
Counter-current mechanism
1 question
DNA replication
1 question
Ecosystem energetics
1 question
Gene regulation
1 question
Human excretion
1 question
Immunity
1 question
Meiosis
1 question
Mendelian genetics
1 question
Photosynthesis
1 question
Photosynthetic electron transport
1 question
Plant hormones
1 question
Population ecology
1 question
Population genetics
1 question
Respiration
1 question
Scoring and result analysis
Correct answers earn 4 marks and wrong answers deduct 1 mark. Unattempted questions score zero. This section's 15 questions are difficulty-tagged: 7 easy, 7 medium, 1 hard. After submitting, you receive topic-wise accuracy, time spent, answer explanations, and source links.
Frequently asked questions
Is this an official IISER IAT question paper?
No. It's an independent practice test with original Biology questions, mapped to the official IISER IAT IAT syllabus and answer-checked on 31 August 2026.
How many questions are in this Biology sectional test, and how long is it?
15 questions in 45 minutes.
Which topics does this test focus on?
It spans 15 topics, with the heaviest coverage on Blood groups, Counter-current mechanism, and DNA replication.
Is there negative marking in this test?
Yes. Each wrong answer deducts 1 mark, and each correct answer earns 4 marks. Unattempted questions score zero.
More IISER IAT practice
4 other reviewed tests are published for this exam. The rest of this IAT stage comes first, then the other stages.
- Chemistry Sectional Test 1 · 15 questions
- Mathematics Sectional Test 1 · 15 questions
- Physics Sectional Test 1 · 15 questions
- Full Mock Test 1 · 60 questions