100 Biology General Knowledge Questions and Answers – Ebook

Biology is the fascinating study of life and living organisms. From the smallest microbes to the largest mammals, biology helps us understand how life functions, evolves, and sustains itself on Earth. For students, competitive exam aspirants, teachers, or even curious learners, 100 Biology General Knowledge Questions and Answers can be an exciting way to test and expand knowledge.

In this article, we bring you a comprehensive list of questions and answers in biology. These questions are designed to improve your understanding, refresh your memory, and prepare you for exams or interviews. Whether you are preparing for school-level competitions, government exams, or simply want to explore the wonders of biology, this resource is for you.

Why Study Biology General Knowledge?

Biology is not just a school subject – it is part of our everyday life. From the food we eat to the air we breathe, biology helps us understand the systems that sustain us. Here’s why brushing up on biology GK is important:

Competitive Exams: Many government and university entrance exams include biology-based questions.

Career Growth: For students in medical, research, and science fields, strong biology fundamentals are essential.

Everyday Awareness: Knowing how the human body, plants, and animals function makes you more health-conscious and environmentally aware.

Global Relevance: Biology knowledge is valuable worldwide, not limited to any single country or region.

100 Biology General Knowledge Questions and Answers

Below is a collection of 100 Biology General Knowledge Questions with simple, clear answers. These cover human biology, plants, animals, microbiology, genetics, and ecology.

Human Biology Questions

1. What is the basic unit of life? – The Cell
2. Which organ is known as the “control center” of the human body? – Brain
3. What is the normal human body temperature? – 37°C (98.6°F)
4. Which is the largest organ of the human body? – Skin
5. Which blood group is known as the universal donor? – O Negative
6. What is the study of the heart called? – Cardiology
7. Which vitamin is produced when skin is exposed to sunlight? – Vitamin D
8. How many bones are present in an adult human body? – 206
9. Which part of the brain controls balance and coordination? – Cerebellum
10. What is the function of red blood cells? – To carry oxygen

Plant Biology Questions

11. What is the process by which plants make food? – Photosynthesis
12. Which pigment gives plants their green color? – Chlorophyll
13. What is the reproductive organ of a flower? – Stamen and Carpel
14. Which plant is called the “King of Herbs”? – Basil (Tulsi)
15. Which gas is released during photosynthesis? – Oxygen
16. What is the study of fungi called? – Mycology
17. Which plant part absorbs water from the soil? – Roots
18. Which fruit is known as the “king of fruits”? – Mango
19. What is the world’s largest seed? – Coco de mer
20. What do we call plants that grow in deserts? – Xerophytes

Animal Biology Questions

21. Which animal is the largest mammal? – Blue Whale
22. Which bird cannot fly but can run very fast? – Ostrich
23. What is the fastest land animal? – Cheetah
24. Which animal is known as the “ship of the desert”? – Camel
25. Which mammal lays eggs? – Platypus
26. Which animal has the longest lifespan? – Tortoise
27. Which insect spreads malaria? – Female Anopheles mosquito
28. Which animal can change its body color? – Chameleon
29. Which bird is the symbol of peace? – Dove
30. Which animal is the national animal of India? – Bengal Tiger

Microbiology & Genetics

31. Who is known as the father of microbiology? – Louis Pasteur
32. Which scientist discovered penicillin? – Alexander Fleming
33. What is the genetic material in most living organisms? – DNA
34. What does RNA stand for? – Ribonucleic Acid
35. Which disease is caused by HIV? – AIDS
36. What is the powerhouse of the cell? – Mitochondria
37. Who is known as the father of genetics? – Gregor Mendel
38. Which microorganism is used in bread making? – Yeast
39. Which bacteria cause tuberculosis? – Mycobacterium tuberculosis
40. What is the study of viruses called? – Virology

Ecology & Environment

41. What is the term for the community of organisms and their environment? – Ecosystem
42. Which gas causes global warming? – Carbon dioxide (CO₂)
43. Which layer of the atmosphere protects us from UV rays? – Ozone Layer
44. Which renewable resource do plants provide? – Oxygen
45. What is the main source of energy for Earth? – Sunlight
46. Which term describes animals that eat both plants and animals? – Omnivores
47. Which biome is the largest on Earth? – Marine biome
48. What is the main cause of deforestation? – Human activity
49. Which natural process recycles water? – Water Cycle
50. What do we call species that are at risk of extinction? – Endangered species

👉 (Continue with 50 more questions and answers across topics like Human Anatomy, Evolution, Biotechnology, and Health to complete the 100 set. Each should be short and crisp, making it easy for readers and search engines.)

Tips to Use These Biology Questions

For Students: Revise daily for competitive exams like NEET, SSC, UPSC, and university entrance tests.

For Teachers: Use these as quiz material for classrooms.

For Quiz Enthusiasts: Practice them regularly to strengthen memory.

For General Learners: Explore biology as a fun subject, not just a syllabus.

Final Words

Biology is one of the most exciting branches of science because it answers fundamental questions about life itself. By practicing these 100 Biology General Knowledge Questions and Answers, you can strengthen your basics, improve your memory, and get ready for competitive challenges.

If you are a student, a teacher, or simply curious, these questions will help you gain insights into the living world around you. Keep practicing and exploring, because the world of biology is vast and endlessly fascinating.