Checkout these interesting 100 biology general knowledge questions covering various topics from botany to zoology. These one-liner questions are perfect for students, quiz enthusiasts, and competitive exam preparation. Each question is followed by its answer to help you learn and verify your knowledge.
Biology GK Questions and Answers
1. What is the study of plants called?
Answer: Botany
2. Who is known as the father of biology?
Answer: Aristotle
3. What is the powerhouse of the cell?
Answer: Mitochondria
4. Which gas do plants absorb during photosynthesis?
Answer: Carbon dioxide (CO₂)
5. What is the largest organ of the human body?
Answer: Skin
6. How many bones are there in the adult human body?
Answer: 206
7. What is the scientific study of animals called?
Answer: Zoology
8. Which blood cells are responsible for fighting infections?
Answer: White blood cells (Leukocytes)
9. What is the process of cell division called?
Answer: Mitosis
10. Which vitamin is produced when the human body is exposed to sunlight?
Answer: Vitamin D
11. What is the main component of the cell wall in plants?
Answer: Cellulose
12. Which part of the brain controls balance and coordination?
Answer: Cerebellum
13. What is the longest bone in the human body?
Answer: Femur (thigh bone)
14. Which pigment gives leaves their green color?
Answer: Chlorophyll
15. What is the study of fungi called?
Answer: Mycology
16. How many chambers does the human heart have?
Answer: 4 (two atria and two ventricles)
17. Which organ produces insulin in the human body?
Answer: Pancreas
18. What is the smallest bone in the human body?
Answer: Stapes (in the ear)
19. Which gas do plants release during photosynthesis?
Answer: Oxygen (O₂)
20. What is the scientific name for humans?
Answer: Homo sapiens
21. Which blood type is known as the universal donor?
Answer: O negative
22. What is the largest gland in the human body?
Answer: Liver
23. Which part of the eye controls the amount of light entering?
Answer: Iris
24. What is the process by which plants lose water through leaves?
Answer: Transpiration
25. How many pairs of chromosomes do humans have?
Answer: 23
26. Which vitamin is essential for blood clotting?
Answer: Vitamin K
27. What is the hardest substance in the human body?
Answer: Tooth enamel
28. Which organ is responsible for filtering blood in the human body?
Answer: Kidneys
29. What is the largest flower in the world?
Answer: Rafflesia arnoldii
30. Which part of the plant absorbs water and minerals from the soil?
Answer: Roots
31. What is the study of cells called?
Answer: Cytology
32. Which blood vessels carry blood away from the heart?
Answer: Arteries
33. What is the largest mammal in the world?
Answer: Blue whale
34. Which vitamin is also known as ascorbic acid?
Answer: Vitamin C
35. What is the functional unit of the kidney?
Answer: Nephron
36. Which gas do humans exhale during respiration?
Answer: Carbon dioxide (CO₂)
37. What is the study of birds called?
Answer: Ornithology
38. Which part of the brain controls breathing and heart rate?
Answer: Medulla oblongata
39. What is the largest part of the human brain?
Answer: Cerebrum
40. Which plant hormone promotes growth and elongation of cells?
Answer: Auxin
41. What is the process of conversion of light energy to chemical energy in plants called?
Answer: Photosynthesis
42. Which organ produces bile in the human body?
Answer: Liver
43. What is the study of fossils called?
Answer: Paleontology
44. Which blood vessels have valves to prevent backflow of blood?
Answer: Veins
45. What is the smallest unit of life?
Answer: Cell
46. Which part of the flower produces pollen?
Answer: Anther
47. What is the study of insects called?
Answer: Entomology
48. Which vitamin deficiency causes scurvy?
Answer: Vitamin C
49. What is the process of shedding old skin in reptiles called?
Answer: Molting
50. Which organ produces eggs in female humans?
Answer: Ovaries
51. What is the study of fish called?
Answer: Ichthyology
52. Which part of the plant conducts photosynthesis?
Answer: Leaves
53. What is the largest bird in the world?
Answer: Ostrich
54. Which vitamin is essential for good vision?
Answer: Vitamin A
55. What is the study of heredity called?
Answer: Genetics
56. Which organ produces sperm in male humans?
Answer: Testes
57. What is the process of conversion of food into energy called?
Answer: Cellular respiration
58. Which part of the cell contains genetic material?
Answer: Nucleus
59. What is the study of viruses called?
Answer: Virology
60. Which blood cells carry oxygen in the human body?
Answer: Red blood cells (Erythrocytes)
61. What is the largest land animal?
Answer: African elephant
62. Which part of the plant develops into a fruit?
Answer: Ovary
63. What is the study of animal behavior called?
Answer: Ethology
64. Which vitamin deficiency causes rickets?
Answer: Vitamin D
65. What is the process of formation of new species called?
Answer: Speciation
66. Which organ stores urine before excretion?
Answer: Urinary bladder
67. What is the study of tissues called?
Answer: Histology
68. Which part of the cell is called the protein factory?
Answer: Ribosomes
69. What is the largest internal organ in the human body?
Answer: Liver
70. Which plant is known as the “terror of Bengal”?
Answer: Water hyacinth
71. What is the study of algae called?
Answer: Phycology
72. Which part of the human eye contains light-sensitive cells?
Answer: Retina
73. What is the process of conversion of ammonia to urea called?
Answer: Ornithine cycle
74. Which gland is known as the master gland?
Answer: Pituitary gland
75. What is the study of bacteria called?
Answer: Bacteriology
76. Which part of the plant transports water and minerals?
Answer: Xylem
77. What is the fastest land animal?
Answer: Cheetah
78. Which vitamin is also known as tocopherol?
Answer: Vitamin E
79. What is the process of formation of gametes called?
Answer: Gametogenesis
80. Which organ produces tears?
Answer: Lacrimal glands
81. What is the study of snakes called?
Answer: Serpentology
82. Which part of the plant transports food?
Answer: Phloem
83. What is the tallest tree in the world?
Answer: Coast redwood (Sequoia sempervirens)
84. Which vitamin deficiency causes beriberi?
Answer: Vitamin B1 (Thiamine)
85. What is the process of cell division that produces gametes called?
Answer: Meiosis
86. Which organ produces adrenaline?
Answer: Adrenal glands
87. What is the study of the immune system called?
Answer: Immunology
88. Which part of the cell is called the suicide bag?
Answer: Lysosome
89. What is the largest living structure on Earth?
Answer: Great Barrier Reef
90. Which plant hormone promotes fruit ripening?
Answer: Ethylene
91. What is the study of the structure of organisms called?
Answer: Morphology
92. Which part of the human ear maintains balance?
Answer: Semicircular canals
93. What is the process of conversion of light stimulus to nerve impulse called?
Answer: Phototransduction
94. Which gland regulates metabolism in the human body?
Answer: Thyroid gland
95. What is the study of the nervous system called?
Answer: Neurology
96. Which part of the cell is called the packaging center?
Answer: Golgi apparatus
97. What is the largest species of shark?
Answer: Whale shark
98. Which vitamin is also known as niacin?
Answer: Vitamin B3
99. What is the process of conversion of RNA to protein called?
Answer: Translation
100. Which organ produces melatonin?
Answer: Pineal gland
We hope you have enjoyed these brilliant biology general knowledge questions and answers! These questions cover a wide range of biological topics and can help you test your knowledge or prepare for exams.