This set of 10 KBC-style Biology questions has been designed for school students who are preparing for board exams. The quiz covers key topics like cell
structure, human physiology, genetics, and plant biology, encouraging concept clarity, self-assessment, and engaging revision through a quiz-based format. 1. What is the site of photosynthesis in a plant cell? A. Mitochondria B. Chloroplast C. Nucleus D. Ribosome 2. Which of the following is a connective tissue? A. Skin B. Blood C. Muscle D. Epithelium 3. Which hormone regulates the sugar level in the blood? A. Thyroxine B. Insulin C. Adrenaline D. Estrogen 4. Which of the following is a sex-linked genetic disorder? A. Sickle-cell anemia B. Thalassemia C. Hemophilia D. Down syndrome 5. Which part of the nephron is responsible for the filtration of blood? A. Loop of Henle B. Bowman's capsule C. Collecting duct D. Renal artery 6. Which plant hormone is responsible for cell elongation? A. Cytokinin B. Auxin C. Gibberellin D. Abscisic acid 7. Which gas is taken in during aerobic respiration? A. Oxygen B. Carbon dioxide C. Nitrogen D. Hydrogen 8. Which organ in the human body produces bile? A. Stomach B. Pancreas C. Liver D. Gallbladder 9. What is the function of guard cells in a plant leaf? A. Transport water B. Produce food C. Control stomatal opening D. Protect from insects 10. Which chromosome pair determines the sex of a human baby? A. 1st pair B. 10th pair C. 21st pair D. 23rd pair Answer Key 1. B. Chloroplast, 2. B. Blood, 3. B. Insulin, 4. C. Hemophilia, 5. B. Bowman's capsule, 6. B. Auxin, 7. A. Oxygen, 8. C. Liver, 9. C. Control stomatal opening, 10. D. 23rd pair
