🔬 Biomolecules – MCQs Part 1 (Q1–Q25) Q1. Biomolecules containing C, H, and O in ~1:2:1 ratio are A) Proteins B) Carbohydrates ✅ C) Lipids D) Nucleic acids Explanation: Carbohydrates generally follow (CH₂O)ₙ empirical formula. Q2. The building blocks of …
🔬 Cell Cycle and Cell Division – MCQs Part 1 (Q1–Q25) Q1. The series of events by which a cell duplicates its genome and divides is called A) Mitosis B) Meiosis C) Cell cycle ✅ D) Cytokinesis Explanation: The cell …
🌱 Transport in Plants – MCQs Part 1 (Q1–Q25) Q1. The main solvent in plant transport is A) Alcohol B) Water ✅ C) Glucose D) Amino acids Explanation: Water is the universal solvent; transport of minerals, sugars, and hormones depends …
🌾 Mineral Nutrition – MCQs Part 1 (Q1–Q25) Q1. Essential elements are those that A) Are abundant in soil B) Increase plant height C) Are indispensable for life cycle completion ✅ D) Improve taste of fruits Explanation: An element is …
☀️ Photosynthesis in Higher Plants – MCQs Part 1 (Q1–Q25) Q1. Photosynthesis is essentially a process of A) Energy release B) Energy conversion ✅ C) Energy storage only D) Energy destruction Explanation: Light energy is converted into chemical energy (ATP, …
🌱 Respiration in Plants – MCQs Part 1: (Q1 – Q25) Q1. Which one of the following is the first step in respiration? a) Glycolysis b) Krebs cycle c) Electron transport chain d) Fermentation Answer: a) Glycolysis 👉 Glycolysis is …
🌿 Plant Growth & Development – MCQs Part 1: Q1–Q25 Q1. Plant growth is best described as a) Anabolic only b) Irreversible increase in size c) Reversible increase in size d) Only increase in dry weight Answer: b) Irreversible increase …
Digestion & Absorption – MCQs Part 1 — Q1–Q25 Q1. Which cells of the stomach secrete hydrochloric acid (HCl)? a) Chief cells b) Parietal (oxyntic) cells c) Mucous neck cells d) G cells Answer: b) Parietal (oxyntic) cells Explanations: a) …
🫁 Breathing & Exchange of Gases – MCQs Part 1 — Q1–Q25 Q1. The primary muscle of normal (quiet) inspiration is: a) External intercostals b) Diaphragm c) Internal intercostals d) Abdominal muscles Answer: b) Diaphragm Explanations: a) External intercostals assist …
🩺 Body Fluids & Circulation – MCQs Part 1 — Questions 1–25 Q1. The largest fluid compartment (by volume) in the adult human body is: a) Plasma b) Interstitial fluid c) Intracellular fluid d) Lymph Answer: c) Intracellular fluid Explanations: …
Excretory Products & Their Elimination – MCQs Part 1 — Q1–Q25 Q1. The primary nitrogenous excretory product in humans is: a) Ammonia b) Urea c) Uric acid d) Creatinine Answer: b) Urea Explanation: Humans are ureotelic — liver converts NH₃ …
Locomotion & Movement – MCQs Part 1 (Q1–Q25) Q1. The basic functional unit of skeletal muscle is the: a) Myofibril b) Sarcomere c) Motor unit d) Fascicle Answer: b) Sarcomere a) Myofibril — a structure composed of repeating sarcomeres; not …
Neural Control & Coordination – MCQs Part 1 — Q1–Q25 Q1. The functional unit of the nervous system is the: a) Glial cell b) Neuron c) Synapse d) Nerve Answer: b) Neuron a) Glial cell — supports neurons (nutrition, myelination, …
MCQs on Human Physiology — Chemical Coordination & Integration, tailored for NEET & CBSE. Each question has four options (a–d). Human Physiology — Chemical Coordination & Integration Part 1 — Questions 1–25 Q1. The primary endocrine gland that links the …
🧬 Reproduction in Organisms – MCQs (Part 1: Q1–Q25) Q1. Which of the following is a defining feature of reproduction? a) Growth b) Replacement of old cells c) Formation of new individuals d) Movement Answer: c) Formation of new individuals …
🌱 Sexual Reproduction in Flowering Plants – MCQs Part 1: Questions 1–25 Q1. In angiosperms, the male gametophyte is represented by: a) Microspore mother cell b) Pollen grain c) Anther d) Stamen ✅ Answer: b) Pollen grain Explanation: The pollen …
🧬 Human Reproduction – MCQs Part 1: Questions 1–25 Q1. The male reproductive system is called: a) Ovary b) Testis c) Testes + accessory ducts and glands d) Vas deferens ✅ Answer: c) Testes + accessory ducts and glands Explanation: …
🟢 Part 1: MCQs on Reproductive Health (Q1–Q25) Q1. Which of the following is the main objective of reproductive health? a) Increase population growth b) Prevent sexually transmitted diseases c) Ensure safe pregnancy and childbirth d) Both b and c …
🟢 Part 1: Principles of Inheritance and Variation (Q1–Q25) Q1. Who is considered the father of genetics? a) Charles Darwin b) Gregor Mendel c) Hugo de Vries d) Alfred Wallace Answer: b) Gregor Mendel Explanation: Mendel is regarded as the …
🟢 Part 1: Molecular Basis of Inheritance (Q1–Q25) Q1. DNA was identified as the transforming principle by a) Hershey and Chase b) Griffith c) Avery, MacLeod, McCarty d) Watson and Crick Answer: c) Avery, MacLeod, McCarty Explanation: They purified the …
🟢 Part 1: Evolution (Q1–Q25) Q1. The theory of natural selection was proposed by a) Lamarck b) Darwin and Wallace c) Weismann d) De Vries Answer: b) Darwin and Wallace Explanation: Both independently conceived natural selection; Darwin detailed it in …