IIT JAM Biological Sciences Mock Test 2026

The IIT JAM Biological Sciences (BL) paper is one of the seven test papers of the Joint Admission Test for M.Sc. (IIT JAM), a national computer-based entrance exam held once a year by one of the IITs on rotation. It is the entry route to M.Sc. programmes in the life sciences at the IITs, IISc and other institutes that accept JAM scores. Eligibility, seats, important dates and the cut-offs are in the official JAM information brochure and change every cycle, so always check them there.

Every JAM paper has 60 questions for 100 marks in 3 hours, in three sections: Section A has 30 single-answer multiple-choice questions (10 of 1 mark and 20 of 2 marks); Section B has 10 multiple-select questions of 2 marks; Section C has 20 numerical-answer questions (10 of 1 mark and 10 of 2 marks). A wrong MCQ answer costs one-third of its marks (⅓ for a 1-mark and ⅔ for a 2-mark question); multiple-select and numerical-answer questions carry no negative marking. The test is computer-based and in English.

The Biological Sciences paper tests biology (cell biology, genetics, physiology, ecology, evolution, plant biology) together with chemistry, mathematics and physics at the basic level. Questions are conceptual and application-based, so reading a book once is not enough: you need to solve many problems under a time limit.

BL me physiology, ecology aur evolution ke concept-based sawal aate hain, isliye diagrams aur flow-charts banakar revise karo.

How to prepare: Read the core biology chapters in a standard text, solve numerical problems in genetics and ecology, and revise chemistry and maths basics every week. Take our free Biological Sciences mock to find out where you stand, and see the IIT JAM Biotechnology paper too if your plan involves a second subject.

• Cell biology and biochemistry: organelles, cell cycle and mitosis, protein targeting, enzymes
• Genetics and molecular biology: inheritance patterns, meiosis, RNA polymerases, the genetic code, reverse transcription
• Physiology: kidney function, nerve impulse and resting potential, cardiac output, oxygen transport, vitamins
• Ecology and evolution: energy flow, logistic growth, genetic drift, homology and analogy, ozone depletion
• Plant biology: Calvin cycle, hormones, double fertilisation, stomatal movement
• Chemistry, maths and physics: pH, moles, equilibrium, derivatives, probability, work and energy