NEET PYQ

 🔥 50 Most Important NEET PYQs of Chapter 17: Breathing and Exchange of Gases – Part 2 (Q26–50) 📚 By neetpyqall | biologyatease1.blogspot.com Here's Part 2 of Chapter 17: Breathing and Exchange of Gases , featuring Q26 to Q50 with detailed explanations to help you conquer NEET! 26. In alveoli, the exchange of gases takes place through: A) Osmosis B) Active transport C) Diffusion D) Filtration ✅ Answer: C) Diffusion 🧠 Explanation: Gases move from higher to lower partial pressure by simple diffusion. 27. The volume of air remaining in the lungs after maximum forceful expiration is: A) Inspiratory reserve volume B) Functional residual capacity C) Expiratory reserve volume D) Residual volume ✅ Answer: D) Residual volume 🧠 Explanation: It keeps alveoli inflated and prevents lung collapse. 28. Which of the following will lead to decreased oxygen affinity of hemoglobin? A) Low temperature B) High pH C) Low CO₂ concentration D) High CO₂ concentration ✅ Ans...

 🔥 50 Most Important NEET PYQs of Chapter 17: Breathing and Exchange of Gases – Part 1 (Q1–25) 📚 By neetpyqall | biologyatease1.blogspot.com Here’s Part 1 of Chapter 17: Breathing and Exchange of Gases , with the first 25 important NEET questions! 1. Which structure prevents the collapse of trachea? A) Smooth muscle B) Cartilaginous rings C) Pleural fluid D) Diaphragm ✅ Answer: B) Cartilaginous rings 🧠 Explanation: C-shaped cartilaginous rings keep the trachea open during breathing. 2. The functional unit of lungs is: A) Bronchiole B) Alveolus C) Trachea D) Bronchus ✅ Answer: B) Alveolus 🧠 Explanation: Gas exchange occurs in the alveoli. 3. Respiratory pigment in humans is: A) Haemocyanin B) Hemoglobin C) Chlorocruorin D) Haemerythrin ✅ Answer: B) Hemoglobin 🧠 Explanation: Hemoglobin transports oxygen in blood. 4. The volume of air remaining in lungs after normal expiration is called: A) Residual volume B) Tidal volume C) Vital capacity D...

 🔥 50 Most Important NEET PYQs of Chapter 16: Digestion and Absorption – Part 2 (Q26–50) 📚 By neetpyqall | biologyatease1.blogspot.com Let’s now complete the second half! Here’s Q26–50 of Chapter 16: Digestion and Absorption . 26. Vitamin essential for calcium absorption is: A) Vitamin A B) Vitamin B C) Vitamin C D) Vitamin D ✅ Answer: D) Vitamin D 🧠 Explanation: Vitamin D promotes absorption of calcium from the intestine. 27. Lacteals are concerned with absorption of: A) Sugars B) Amino acids C) Fats D) Minerals ✅ Answer: C) Fats 🧠 Explanation: Lacteals (lymphatic vessels in villi) absorb fatty acids and glycerol. 28. Which of the following is NOT digested in the stomach? A) Proteins B) Fats C) Carbohydrates D) Both B and C ✅ Answer: D) Both B and C 🧠 Explanation: Only proteins are digested in the stomach, not carbohydrates or fats. 29. The semi-liquid mass of partly digested food in the stomach is called: A) Bolus B) Chyme C) Chyle D) P...

 🔥 50 Most Important NEET PYQs of Chapter 16: Digestion and Absorption – Part 1 (Q1–25) 📚 By neetpyqall | biologyatease1.blogspot.com Let’s dive into the first 25 PYQs of Chapter 16: Digestion and Absorption — super important for NEET! 1. Which enzyme is not present in gastric juice? A) Pepsin B) Rennin C) Lipase D) Amylase ✅ Answer: D) Amylase 🧠 Explanation: Amylase is found in saliva and pancreatic juice, but not in gastric juice. 2. In adults, Rennin is: A) Active B) Inactive C) Secreted in large amounts D) Present in bile ✅ Answer: B) Inactive 🧠 Explanation: Rennin (important for milk protein digestion) is active in infants but absent or inactive in adults. 3. Which of the following is absorbed in the stomach? A) Proteins B) Alcohol C) Fats D) Starch ✅ Answer: B) Alcohol 🧠 Explanation: Some substances like alcohol and certain drugs are absorbed directly from the stomach. 4. Which organ secretes bile? A) Pancreas B) Gallbladder C) Live...

 🪴 50 Most Important NEET PYQs of Chapter 15: Plant Growth and Development – Part 2 (Q26–50) 📘 By neetpyqall | biologyatease1.blogspot.com Continuing with Part 2! Let’s crack the next set of most important NEET previous year questions for Chapter 15, Plant Growth and Development . 26. Which plant hormone can replace cold treatment for flowering? A) Auxin B) Cytokinin C) Gibberellin D) ABA ✅ Answer: C) Gibberellin 🧠 Explanation: Gibberellins can substitute for cold treatment (vernalization) to induce flowering in some plants. 27. Dedifferentiation means: A) Differentiation of meristematic cells B) Conversion of mature cells into meristematic cells C) Loss of ability to divide D) All of the above ✅ Answer: B) Conversion of mature cells into meristematic cells 🧠 Explanation: Dedifferentiation is when mature cells regain the ability to divide and form meristems like interfascicular cambium. 28. Which process does red light regulate? A) Phototropism B) Ger...

  🪴 50 Most Important NEET PYQs of Chapter 15: Plant Growth and Development – Part 1 (Q1–25) 📘 By neetpyqall | biologyatease1.blogspot.com 1. Which one is a growth inhibitor? A) IAA B) GA C) ABA D) Kinetin ✅ Answer: C) ABA 🧠 Explanation: Abscisic acid (ABA) is known as a growth inhibitor because it promotes dormancy and abscission, and inhibits seed germination. 2. Gibberellins cause: A) Inhibition of cell division B) Cell elongation C) Stomatal closure D) Leaf fall ✅ Answer: B) Cell elongation 🧠 Explanation: Gibberellins promote stem elongation and leaf expansion by stimulating cell elongation and breaking seed dormancy. 3. The function of cytokinins is: A) Inhibiting cell division B) Promoting root growth C) Promoting cell division D) Promoting abscission ✅ Answer: C) Promoting cell division 🧠 Explanation: Cytokinins promote cytokinesis (cell division), especially in actively growing tissues. 4. Which hormone delays leaf senescence? A) ABA ...