Class 9 Biology - Guess Paper 2025-26

                        ( Shorts Questions )

Chapter 1; introduction to biology

1. Define biology.
2. What is the difference between zoology and botany?
3. Define bioinformatics.
4. What is biotechnology?
5. Name the branches of biology. (Important)

Chapter 2; Solving a Biological problem 

6. Define hypothesis. (Important)
7. What is a biological method?
8. Write the difference between inductive and deductive reasoning.
9. What is data analysis?
10. Name two tools used in biological research.

Chapter 3; Biodiversity 

11. What is biodiversity?
12. Define extinct species. (Important)
13. What is taxonomy?
14. Differentiate between flora and fauna.
15. Name the five kingdoms of organisms.

Chapter 4; Cells and Tissues 

16. What is the cell theory? (Important)
17. Define prokaryotic and eukaryotic cells.
18. What are organelles?
19. Write the function of mitochondria.
20. What is a cell wall?

Chapter 5; Cell Cycle 

21. What is mitosis? (Important)
22. Define meiosis.
23. What is the function of spindle fibers?
24. Write the phases of mitosis.
25. What is cytokinesis?

Chapter 6 ; Enzymes 

26. Define enzyme.
27. What is a substrate?
28. Define activation energy. (Important)
29. Write any two properties of enzymes.
30. What is the role of enzymes in digestion?

Chapter ; Bioenergetic

31. Define photosynthesis. (Important)
32. What is chlorophyll?
33. Write the chemical equation of photosynthesis.
34. Define cellular respiration.
35. What is ATP?

Chapter 8; Nutrition

36. What is autotrophic nutrition? (Important)
37. Define heterotrophic nutrition.
38. Name the types of vitamins.
39. Write the role of proteins in the human body.
40. What is a balanced diet?

Chapter 9; Transport 

41. Define osmosis. (Important)
42. What is diffusion?
43. Differentiate between active and passive transport.
44. What is transpiration?
45. Name two types of vascular tissues in plants.

Chapter 10: Gaseous Exchange

46. Define gaseous exchange.
47. Write the composition of air.
48. What is the role of alveoli in the lungs? (Important)
49. Name two diseases of the respiratory system.
1. What is the diaphragm?                                                                                                                                  LONG Questions 
2.  Explain the   levels of biological organization in detail with examples.
4. Describe the process of photosynthesis, including its chemical equation and factors affecting it.
5. Write a comprehensive note on the cell as a structural and functional unit of life.
6. Explain mitosis and its phases with the help of a labeled diagram.
7. Discuss the role of enzymes in metabolic reactions with examples.
8. Define biodiversity and explain its significance and threats in the modern world.
9. Describe the structure and functions of plant tissues (parenchyma, collenchyma, and sclerenchyma).
10. Write a detailed note on the transport mechanisms in cells, including diffusion, osmosis, and active transport.
11. Explain the digestive system of humans, including the structure and functions of its organs.
12. Define kingdom classification and write about the five kingdoms with their main characteristics.