“NCERT Based NEET Biology MCQs 2025 | Most Important Questions with Answers”

 “NCERT Based NEET Biology MCQs 2025 | Most Important Questions with Answers”

Preparing for NEET 2025 Biology? Success in NEET largely depends on mastering NCERT-based questions, as nearly 70–80% of the exam is directly derived from NCERT textbooks. To help aspirants, MCQJourney.com brings you a curated set of NCERT Biology MCQs for NEET, covering crucial chapters like Human Physiology, Plant Physiology, Genetics, Ecology, and Cell Biology. Each question is designed to strengthen your conceptual clarity and exam readiness. With detailed answers provided, students can practice effectively and identify weak areas. This post is optimized for NEET Biology MCQs, NCERT-based questions, NEET preparation, and exam practice—making it a one-stop resource for aspirants aiming for top ranks. Whether you’re revising or attempting mock practice, these NEET Biology MCQs with answers will boost your confidence and accuracy. Bookmark this page and keep practicing daily to ace your NEET exam with ease.

🔑 MCQs with Answers

1. Which organelle is known as the “powerhouse of the cell”?

   • a) Ribosome

   • b) Mitochondria ✅

   • c) Golgi apparatus

   • d) Lysosome

2. Which tissue transports food in plants?

   • a) Xylem

   • b) Phloem ✅

   • c) Cambium

   • d) Cork

3. Which enzyme initiates carbohydrate digestion in humans?

   • a) Pepsin

   • b) Salivary amylase ✅

   • c) Trypsin

   • d) Lipase

4. Which blood group is known as the universal donor?

   • a) AB+

   • b) O- ✅

   • c) A+

   • d) B-

5. Which hormone regulates blood sugar levels?

   • a) Insulin ✅

   • b) Thyroxine

   • c) Adrenaline

   • d) Estrogen

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 by sunlight?

   • a) Vitamin A

   • b) Vitamin D ✅

   • c) Vitamin C

   • d) Vitamin K

8. Which process produces gametes in humans?

   • a) Mitosis

   • b) Meiosis ✅

   • c) Binary fission

   • d) Budding

9. Which organ in humans secretes bile?

   • a) Pancreas

   • b) Liver ✅

   • c) Gall bladder

   • d) Stomach

10. Which blood vessel carries oxygenated blood from lungs to heart?

    • a) Pulmonary artery

    • b) Pulmonary vein ✅

    • c) Aorta

    • d) Vena cava

11. Which structure connects placenta to fetus?

    • a) Umbilical cord ✅

    • b) Amniotic sac

    • c) Chorion

    • d) Yolk sac

12. Which law explains segregation of alleles?

    • a) Mendel’s Law of Segregation ✅

    • b) Hardy-Weinberg Law

    • c) Law of Independent Assortment

    • d) Law of Dominance

13. Which gas is essential for photosynthesis?

    • a) Oxygen

    • b) Carbon dioxide ✅

    • c) Nitrogen

    • d) Hydrogen

14. Which organ filters nitrogenous waste in humans?

    • a) Liver

    • b) Kidney ✅

    • c) Lungs

    • d) Heart

15. Which structure in plants absorbs water?

    • a) Root hairs ✅

    • b) Stomata

    • c) Leaves

    • d) Stem

16. Which protein carries oxygen in blood?

    • a) Hemoglobin ✅

    • b) Myosin

    • c) Collagen

    • d) Keratin

17. Which part of the brain controls balance and posture?

    • a) Cerebrum

    • b) Cerebellum ✅

    • c) Medulla

    • d) Hypothalamus

18. Which structure in plants prevents water loss?

    • a) Cuticle ✅

    • b) Stomata

    • c) Xylem

    • d) Phloem

19. Which organelle is involved in protein synthesis?

    • a) Ribosome ✅

    • b) Lysosome

    • c) Vacuole

    • d) Golgi apparatus

20. Which ecological pyramid is always upright?

• a) Pyramid of biomass

• b) Pyramid of energy ✅

• c) Pyramid of numbers

• d) Pyramid of productivity

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