“Top 20 NEET 2025 Biology MCQs with Answers | NCERT-Based Practice for High Scores”

 “Top 20 NEET 2025 Biology MCQs with Answers | NCERT-Based Practice for High Scores”

Preparing for NEET 2025? Boost your biology score with this curated set of Top 20 NEET Biology MCQs based on the latest NCERT syllabus and exam trends. These multiple-choice questions cover key topics like Human Physiology, Genetics, Plant Kingdom, and Cell Structure, helping students master concepts and improve accuracy. Each question includes a detailed answer to reinforce learning and build confidence. Whether you're revising for the final stretch or starting your prep, this post is your go-to resource for NEET Biology practice. Stay ahead with updated content aligned to the NEET 2025 pattern, and make your preparation smarter. Ideal for students of Class 11 and 12, this post is optimized for NEET aspirants, medical entrance exam candidates, and competitive exam enthusiasts. Bookmark this page and share it with fellow aspirants. Your journey to cracking NEET starts here!

Target Keywords: NEET 2025 Biology MCQs, NCERT Biology Questions, NEET Practice Questions, NEET Exam Preparation, NEET Biology Quiz

1. Which hormone regulates blood sugar levels?
   a) Insulin ✅
   b) Thyroxine
   c) Adrenaline
   d) Estrogen

2. DNA replication occurs during which phase of the cell cycle?
   a) G1
   b) S ✅
   c) G2
   d) M

3. Which part of the brain controls balance and coordination?
   a) Cerebrum
   b) Cerebellum ✅
   c) Medulla
   d) Pons

4. Which plant hormone promotes cell elongation?
   a) Cytokinin
   b) Auxin ✅
   c) Gibberellin
   d) Ethylene

5. Which blood group is known as the universal donor?
   a) AB+
   b) O- ✅
   c) A+
   d) B-

6. Which structure in plants is responsible for photosynthesis?
   a) Mitochondria
   b) Chloroplast ✅
   c) Nucleus
   d) Vacuole

7. Which vitamin is synthesized in the skin?
   a) Vitamin A
   b) Vitamin D ✅
   c) Vitamin C
   d) Vitamin K

8. Which is the largest gland in the human body?
   a) Pancreas
   b) Liver ✅
   c) Thyroid
   d) Adrenal

9. Which process converts glucose into pyruvate?
   a) Glycolysis ✅
   b) Krebs cycle
   c) Photosynthesis
   d) Fermentation

10. Which part of the nephron filters blood?
    a) Loop of Henle
    b) Glomerulus ✅
    c) Collecting duct
    d) Bowman's capsule

11. Which enzyme breaks down starch?
    a) Lipase
    b) Amylase ✅
    c) Protease
    d) Maltase

12. Which is the functional unit of the kidney?
    a) Neuron
    b) Nephron ✅
    c) Alveolus
    d) Axon

13. Which gas is released during photosynthesis?
    a) CO₂
    b) O₂ ✅
    c) N₂
    d) H₂

14. Which tissue transports water in plants?
    a) Phloem
    b) Xylem ✅
    c) Parenchyma
    d) Collenchyma

15. Which chromosome determines sex in humans?
    a) X and Y ✅
    b) 21
    c) 18
    d) 13

16. Which disease is caused by a deficiency of insulin?
    a) Diabetes mellitus ✅
    b) Goiter
    c) Rickets
    d) Scurvy

17. Which part of the flower produces pollen?
    a) Ovary
    b) Anther ✅
    c) Petal
    d) Sepal

18. Which part of the flower produces pollen?
    a) Ovary
    b) Anther ✅
    c) Petal
    d) Sepal

19. Which organ is affected by hepatitis?
    a) Heart
    b) Liver ✅
    c) Kidney
    d) Lung

20. Which molecule carries genetic information?
    a) RNA
    b) DNA ✅
    c) Protein
    d) Lipid

📝 Labels 

• NEET Biology MCQs

• NEET 2025 Preparation

• NCERT Biology Questions

• Medical Entrance Practice

• Competitive Exams

• Class 11 & 12 Biology

• Exam Quiz Bank

🔖 Hashtags 

#NEET2025 #BiologyMCQs #NCERTBiology #NEETPrep #MedicalEntrance #ExamPractice #MCQJourney #NEETQuiz #NEETBiology #NEETMockTest #NEETRevision #NEETSyllabus #NEETBotany #NEETZoology #NEETQuestions #NEETTestSeries #NEETPreparation #NEETExamTips #NEETStudyMaterial #NEETDailyPractice