1000 One-Liner Biology Facts.

Excerpt:
Boost your Biology knowledge with 100 One-Liner Biology GK Facts covering the human body, plants, animals, genetics, diseases, nutrition, ecology and more. Perfect for SSC, Railway, Banking, UPSC, ADRE, Assam Police, TET and other competitive exams.

One-Liner Biology GK Facts: 1000 Important Facts for Competitive Exams

Biology is an important part of General Science and General Knowledge exams. These one-liner Biology GK facts are useful for students preparing for SSC, Railway, Banking, UPSC, State PSC, ADRE, Assam Police, TET and other competitive examinations.

🧬 One-Liner Biology GK Facts

1. What is the basic unit of life?
Answer: Cell


2. Who is known as the Father of Biology?
Answer: Aristotle


3. Who discovered the cell?
Answer: Robert Hooke


4. Which organelle is known as the powerhouse of the cell?
Answer: Mitochondria


5. Which organelle is called the control centre of the cell?
Answer: Nucleus


6. What is the green pigment in plants called?
Answer: Chlorophyll


7. Where does photosynthesis mainly occur?
Answer: Chloroplasts


8. What gas do plants absorb during photosynthesis?
Answer: Carbon dioxide


9. What gas is released during photosynthesis?
Answer: Oxygen


10. What is the process by which plants prepare food called?
Answer: Photosynthesis


11. Which part of a plant absorbs water from the soil?
Answer: Roots


12. Which tissue transports water in plants?
Answer: Xylem


13. Which tissue transports food in plants?
Answer: Phloem


14. What is the loss of water vapour from leaves called?
Answer: Transpiration


15. Which part of the flower produces pollen?
Answer: Anther


16. Which part of a flower receives pollen?
Answer: Stigma


17. What is the male reproductive part of a flower?
Answer: Stamen


18. What is the female reproductive part of a flower?
Answer: Pistil or carpel


19. What is the process of transfer of pollen called?
Answer: Pollination


20. What is the fusion of male and female gametes called?
Answer: Fertilization



🫀 Human Body GK

21. What is the largest organ of the human body?
Answer: Skin


22. What is the largest internal organ of the human body?
Answer: Liver


23. What is the smallest bone in the human body?
Answer: Stapes


24. What is the longest bone in the human body?
Answer: Femur


25. How many bones are there in an adult human body?
Answer: 206


26. Which organ pumps blood throughout the body?
Answer: Heart


27. How many chambers does the human heart have?
Answer: Four


28. Which blood vessels carry blood away from the heart?
Answer: Arteries


29. Which blood vessels carry blood toward the heart?
Answer: Veins


30. Which blood cells fight infections?
Answer: White blood cells


31. Which blood cells transport oxygen?
Answer: Red blood cells


32. Which component of blood helps in clotting?
Answer: Platelets


33. What is the red pigment in blood called?
Answer: Haemoglobin


34. Which organ is mainly responsible for filtering blood and producing urine?
Answer: Kidneys


35. How many kidneys does a healthy human normally have?
Answer: Two


36. Which organ is primarily responsible for gas exchange?
Answer: Lungs


37. What is the functional unit of the kidney?
Answer: Nephron


38. What is the functional unit of the nervous system?
Answer: Neuron


39. Which part of the brain controls balance and coordination?
Answer: Cerebellum


40. Which part of the brain controls many involuntary activities such as breathing and heartbeat?
Answer: Medulla oblongata



🧪 Biology and Nutrition

41. Which vitamin is produced in the skin in sunlight?
Answer: Vitamin D


42. Which vitamin is important for normal blood clotting?
Answer: Vitamin K


43. Which vitamin is essential for good vision?
Answer: Vitamin A


44. Deficiency of vitamin C causes which disease?
Answer: Scurvy


45. Deficiency of vitamin D causes which disease?
Answer: Rickets


46. Deficiency of iron can cause what condition?
Answer: Anaemia


47. Which mineral is essential for thyroid hormone production?
Answer: Iodine


48. What is the main source of energy in the human diet?
Answer: Carbohydrates


49. Which nutrient is mainly required for growth and tissue repair?
Answer: Protein


50. Which nutrient provides the most energy per gram?
Answer: Fat


51. What is the main sugar present in blood?
Answer: Glucose


52. Which hormone helps regulate blood glucose levels?
Answer: Insulin


53. Which gland produces insulin?
Answer: Pancreas


54. Which hormone is known as the emergency hormone?
Answer: Adrenaline


55. Which gland produces thyroxine?
Answer: Thyroid gland



🦠 Microbiology and Diseases

56. What are bacteria?
Answer: Microscopic single-celled organisms without a membrane-bound nucleus


57. Which microorganism causes malaria?
Answer: Plasmodium


58. Which mosquito transmits malaria?
Answer: Female Anopheles mosquito


59. Which microorganism causes tuberculosis?
Answer: Mycobacterium tuberculosis


60. Which bacterium causes typhoid?
Answer: Salmonella Typhi


61. Which virus causes AIDS?
Answer: HIV


62. Which virus causes COVID-19?
Answer: SARS-CoV-2


63. Which organism causes ringworm?
Answer: Fungi


64. What is vaccination?
Answer: A method of stimulating the immune system to develop protection against specific diseases


65. What is immunity?
Answer: The body’s ability to resist or fight disease-causing agents



🧬 Genetics and Evolution

66. Who is known as the Father of Genetics?
Answer: Gregor Mendel


67. Where is DNA mainly located in a eukaryotic cell?
Answer: Nucleus


68. What does DNA stand for?
Answer: Deoxyribonucleic Acid


69. What does RNA stand for?
Answer: Ribonucleic Acid


70. What is a gene?
Answer: A unit of heredity that carries information for a biological trait


71. What are chromosomes?
Answer: Structures containing DNA and associated proteins


72. How many pairs of chromosomes are normally present in humans?
Answer: 23 pairs


73. How many chromosomes are normally present in a human body cell?
Answer: 46


74. Which chromosomes determine biological sex in humans?
Answer: X and Y chromosomes


75. What is heredity?
Answer: Transmission of characteristics from parents to offspring


76. What is mutation?
Answer: A change in genetic material


77. Who proposed the theory of evolution by natural selection?
Answer: Charles Darwin


78. What is natural selection?
Answer: Differential survival and reproduction of organisms with heritable traits



🐾 Animal Biology

79. Which is the largest mammal?
Answer: Blue whale


80. Which is the largest land animal?
Answer: African elephant


81. Which is the fastest land animal?
Answer: Cheetah


82. Which animal is known for having the longest neck?
Answer: Giraffe


83. Which mammal can fly?
Answer: Bat


84. Which animal is known as the ship of the desert?
Answer: Camel


85. Which is the largest living bird?
Answer: Ostrich


86. Which is the smallest bird?
Answer: Bee hummingbird


87. Which animal is known for changing its skin colour?
Answer: Chameleon


88. Which animal has three hearts?
Answer: Octopus


89. Which animal is known for regenerating lost limbs?
Answer: Starfish


90. Which is the largest fish?
Answer: Whale shark



🌱 Ecology and Environment

91. What is an ecosystem?
Answer: A system formed by living organisms interacting with their physical environment


92. What are producers?
Answer: Organisms that make their own food, mainly through photosynthesis


93. What are consumers?
Answer: Organisms that obtain food by eating other organisms


94. What are decomposers?
Answer: Organisms that break down dead organic matter


95. What is a food chain?
Answer: A sequence showing the transfer of food and energy between organisms


96. What is biodiversity?
Answer: Variety of living organisms in a particular area or on Earth


97. What is deforestation?
Answer: Large-scale removal of forests


98. What is conservation?
Answer: Protection and wise management of natural resources and biodiversity


99. What is a habitat?
Answer: Natural environment where an organism lives


100. What is the ultimate source of energy for most ecosystems?
Answer: The Sun




—

📚 Why Learn One-Liner Biology GK?

One-liner questions are excellent for quick revision. They help students remember important biological terms, human-body facts, plant biology, genetics, diseases, nutrition, ecology and animal science in a short time.

🎯 Useful For

SSC & Railway Exams

Banking Exams

UPSC & State PSC

ADRE & Assam Competitive Exams

Assam Police Exams

TET & Teacher Recruitment Exams

School and College Students

General Knowledge Practice