🧬High Weightage
Cell: The Unit of Life
42 questions · Difficulty: Medium
- ✓ Cell organelles
- ✓ Prokaryotic vs Eukaryotic
- ✓ Cell membrane
- ✓ Nucleus
Practice the most expected, high-weightage, and frequently repeated NEET Biology questions for 2026 — curated from NCERT, previous year papers (PYQs), and expert analysis. Covers all chapters from Class 11 & 12 Biology.
90
Biology Questions in NEET
360
Total Marks (Biology)
50K+
Students Practicing on RankUpp
95%
Questions from NCERT
NEET Biology carries 360 out of 720 marks — making it the single largest section in the exam. Unlike Physics and Chemistry, Biology rewards consistent practice and NCERT mastery more than conceptual derivation. Students who systematically practice chapter-wise important questions consistently score 340–360/360 in Biology.
Our NEET Biology important questions for 2026 are curated by subject matter experts based on a rigorous analysis of NEET previous year question papers (2011–2024), NTA's official syllabus, and NCERT chapter weightage. Every question is mapped to its source chapter, difficulty level, and frequency of appearance in past exams.
Focus areas for NEET 2026 Biology include Genetics and Evolution (12–15 questions), Human Physiology (14–16 questions), Ecology (10–12 questions), and Plant Physiology (8–10 questions). Together, these four units make up nearly 60% of the entire Biology section.
Select any chapter to practice targeted questions. Each set is ordered by NEET weightage and difficulty level.
42 questions · Difficulty: Medium
38 questions · Difficulty: Hard
65 questions · Difficulty: Hard
58 questions · Difficulty: Hard
45 questions · Difficulty: Medium
36 questions · Difficulty: Medium
40 questions · Difficulty: Medium
30 questions · Difficulty: Medium
These questions are from NEET previous years and are highly expected to repeat in NEET 2026.
Q1. Which organelle is known as the powerhouse of the cell and produces ATP via oxidative phosphorylation?
Answer: Mitochondria — they carry out cellular respiration and synthesize ATP through the electron transport chain and chemiosmosis.
Q2. In Mendel's experiment, what is the phenotypic ratio obtained in a dihybrid cross (F2 generation)?
Answer: 9:3:3:1 — This ratio represents dominant-dominant : dominant-recessive : recessive-dominant : recessive-recessive combinations.
Q3. Which of the following is the correct site of fertilization in the human female reproductive system?
Answer: Ampullary-isthmic junction of the fallopian tube (oviduct) — this is where the sperm typically meets the secondary oocyte.
Q4. What is the role of the enzyme RuBisCO in the Calvin cycle and why is it considered the most abundant enzyme on Earth?
Answer: RuBisCO (Ribulose-1,5-bisphosphate carboxylase/oxygenase) catalyzes carbon fixation — binding CO₂ to RuBP. It's the most abundant enzyme because photosynthesis is the primary carbon-fixation process on Earth.
Q5. The concept of 'Ecological Pyramids' was given by which ecologist, and what does an inverted pyramid of biomass indicate?
Answer: Charles Elton proposed ecological pyramids. An inverted pyramid of biomass (e.g., in aquatic ecosystems) indicates producers have less biomass than consumers at any given time, due to rapid turnover of phytoplankton.
A proven step-by-step strategy used by NEET toppers to maximize Biology scores.
Read NCERT Biology Class 11 & 12 thoroughly. Every diagram, every definition, and every example is exam-relevant. At least 80% of NEET Biology comes directly from NCERT.
After each chapter, immediately solve 40–50 important questions mapped to that topic. This reinforces concepts and exposes frequently tested patterns before they appear in exams.
Study NEET PYQs from 2015–2024 to identify repeating concepts, question styles, and common traps. Genetics, Physiology, and Ecology have strong repeating patterns.
Practice at least 2 full-length NEET mock tests per week in exam conditions. Time management in Biology (90 questions in ~50 minutes) is a learnable skill.
Maintain an error log. Review wrong answers every Sunday. Focus 60% of revision time on your weak chapters — typically Biomolecules and Human Physiology for most students.
Based on analysis of NEET question papers from 2011 to 2024, the following chapters and topics receive consistent heavy representation every year. Understanding this distribution helps students prioritize effort and maximize their Biology score.
This is consistently the highest-weighted unit in NEET Biology. Key areas include Mendel's laws of inheritance, molecular basis of inheritance (DNA replication, transcription, translation), chromosomal theory, mutations, and evolution theories (Darwinism, Modern Synthesis). Questions from this unit often involve application of Punnett squares, blood group genetics, and molecular biology numericals.
Human Physiology spans digestion, circulation, respiration, excretion, locomotion, neural and chemical integration, and immune response. NEET regularly tests specific values — cardiac output, tidal volume, glomerular filtration rate — so learn these numbers precisely from NCERT. Process-based questions (steps of digestion, mechanism of muscle contraction) are very common.
Ecology questions are largely factual and concept-based, making them the easiest marks to secure with focused preparation. Important areas include ecosystem structure and function, energy flow, nutrient cycling, population ecology, biodiversity conservation, and environmental issues. Questions about named ecosystems, specific species, and conservation terminology appear regularly.
Photosynthesis (light reaction, dark reaction/Calvin cycle, C3 vs C4 pathways) and plant respiration (glycolysis, Krebs cycle, ETC) are the most tested areas. Plant growth regulators (phytohormones) and their specific functions — auxins, cytokinins, gibberellins, abscisic acid, ethylene — are also frequently tested.
💡 Expert Tip: If you can score 85%+ in Genetics, Physiology, and Ecology alone, you will likely score 300+ in Biology. These three units cover ~45 of the 90 Biology questions in NEET 2026.
Human Physiology, Genetics & Evolution, Plant Physiology, and Ecology together account for approximately 60–65% of NEET Biology questions. Focus maximum preparation time on these chapters for the best returns.
NCERT is the foundation and covers 80–85% of NEET Biology directly. However, for remaining questions — especially application-based ones — supplement with previous year questions (PYQs) and chapter-wise important questions available on RankUpp.
NEET 2026 has 90 Biology questions in total — 45 from Botany and 45 from Zoology — each carrying 4 marks, with a -1 negative marking. Biology section has a total of 360 marks out of 720.
For strong NEET preparation, aim for 80–120 Biology questions daily. Practice chapter-wise for the first 3 months, then shift to mixed full-length mocks in the final 2 months before the exam.
Yes, Biology is the highest-scoring section in NEET. With thorough NCERT mastery and consistent practice of important questions, scoring 340–360/360 in Biology is achievable and realistic.
The most repeated NEET Biology topics include: Genetics (Mendelism, Molecular Biology), Human Physiology (Heart, Kidney, Nervous System), Plant Physiology (Photosynthesis, Respiration), Ecology (Ecosystems, Biodiversity), and Cell Biology (Organelles, Cell division).
RankUpp's NEET Biology question bank is curated by experienced biology educators with 10+ years of NEET teaching experience. All questions are verified against official NCERT textbooks and NTA guidelines. Updated regularly with the latest exam trends.
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Expert-curated Questions
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100% NCERT Aligned
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PYQ Pattern Analysis
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Completely Free
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