MCQs For Class 9 Science

Q1. Who discovered the cell for the first time?

Q2. In which year did Robert Hooke discover the cell?

Q3. Robert Hooke observed the cells by examining a thin slice of:

Q4. Who discovered the free-living cells in pond water for the first time?

Q5. Who discovered the nucleus in the cell?

Q6. The term 'Protoplasm' was coined by:

Q7. Who proposed the 'Cell Theory' that all plants and animals are composed of cells?

Q8. Who expanded the cell theory by suggesting that all cells arise from pre-existing cells?

Q9. Which organelle is known as the 'Powerhouse of the cell'?

Q10. Which organelle is known as the 'Suicide bags' of a cell?

Q11. The plasma membrane is made up of:

Q12. The process by which water molecules move from a region of high concentration to low concentration through a selectively permeable membrane is:

Q13. A cell placed in a hypotonic solution will:

Q14. The cell wall of plants is mainly composed of:

Q15. The phenomenon where a living plant cell loses water through osmosis and the contents shrink away from the cell wall is called:

Q16. Which of the following lacks a nuclear membrane?

Q17. The undefined nuclear region in prokaryotes is known as:

Q18. Chromosomes are made up of:

Q19. The functional segments of DNA are called:

Q20. Which organelle is responsible for protein synthesis?

Q21. The Smooth Endoplasmic Reticulum (SER) helps in the manufacture of:

Q22. Which organelle is involved in detoxifying many poisons and drugs in liver cells?

Q23. Which organelle is involved in the formation of Lysosomes?

Q24. Mitochondria are strange organelles because they have their own:

Q25. ATP stands for:

Q26. Which plastid contains the pigment chlorophyll?

Q27. The primary function of leucoplasts is:

Q28. Which of these organelles is found only in plant cells?

Q29. Large central vacuoles are a characteristic of:

Q30. Amoeba acquires its food through a process called:

Q31. The "Kitchen of the cell" is:

Q32. Which of the following is an example of a unicellular organism?

Q33. Which cell organelle is called the 'Packaging and Dispatching unit'?

Q34. The only cell organelle seen in a prokaryotic cell is:

Q35. Osmosis is a special case of:

Q36. Which of the following are called 'Protein factories' of the cell?

Q37. If a cell's organization is destroyed due to some physical or chemical influence, what will happen?

Q38. What is the main function of the Nucleus?

Q39. Which organelle has its own DNA and ribosomes besides Mitochondria?

Q40. Cell division that results in two identical daughter cells for growth is:

Q41. Cell division that produces gametes (sperm/egg) and results in four daughter cells is:

Q42. The cell wall lies ________ the plasma membrane in plant cells.

Q43. Which solution has the same concentration of water as inside the cell?

Q44. Who gave the phrase "Omnis cellula-e cellula" (all cells arise from pre-existing cells)?

Q45. Mitochondria release energy in the form of ________ molecules.

Q46. Chromoplasts give color to:

Q47. Bacterial cells are generally ________ than eukaryotic cells.

Q48. Internal support and turgidity to the plant cell is provided by:

Q49. Membrane biogenesis is the process of building the cell membrane using proteins and lipids, often assisted by:

Q50. Which of the following does not have a membrane?