Class 9 Science Chapter 2 Cell: The Building Block of Life – Latest Concept Clarity MCQs with Answers | New NCERT Book 2026–27 Edition

 Welcome to our Class 9 Science Chapter 2 – Cell: The Building Block of Life Concept Clarity MCQs with Answers. This practice set contains latest MCQs based on the new NCERT Class 9 Science Book 2026–27 Edition and is designed to help students strengthen their understanding of important concepts related to cells, their structure, cell organelles, and their functions.

These concept-based MCQs focus on understanding rather than memorisation, helping students test their conceptual clarity and identify areas that need improvement. The questions are ideal for Class 9 students preparing for school examinations, revision, and concept-based assessments according to the latest NCERT textbook and syllabus for the 2026–27 academic session.

Cell: The Building Block of Life Current Concept Clarity MCQs with Answers:-

Q1. Where are the hot springs of Puga Valley located?
(a) Jammu & Kashmir
(b) Himachal Pradesh
(c) Ladakh
(d) None of these

2. Heat-loving bacteria living in hot springs are called:
(a) Thermophiles
(b) Methanogens
(c) Selenophiles
(d) Halophiles

3. The protective layer of heat-loving bacteria is made up of:
(a) Hydrochloric acid
(b) Phosphate
(c) Sodium sulphate
(d) Calcium carbonate

4. Which of the following is not a part of the respiratory system?
(a) Nasal cavity
(b) Nasal pore
(c) Trachea
(d) None of these

5. What is the limit of resolution of the human eye?
(a) 0.01 mm
(b) 1 mm
(c) 0.1 mm
(d) None of these

6. Who was the first person to observe cells, and in which year?
(a) Robert Brown, 1665
(b) Robert Hooke, 1665
(c) Robert Hooke, 1675
(d) Robert Brown, 1675

7. Which of the following defines the individuality of a cell?
(a) Cell wall
(b) Cell membrane
(c) Nucleus
(d) None of these

8. How do oxygen and carbon dioxide move across the membranes of alveoli in the lungs?
(a) Diffusion
(b) Osmosis
(c) Both (a) and (b)
(d) None of these

9. Which of the following components of the fluid mosaic model acts as a gatekeeper by helping substances pass through the cell membrane?
(a) Lipids
(b) Water
(c) Proteins
(d) None of these

10. What will happen when a Rhoeo leaf is placed in a concentrated sugar solution?
(a) The cells will not shrink in size
(b) The cells will shrink
(c) The cells will swell
(d) None of these

11. The network of fine fibres present in eukaryotic cells forms the:
(a) Cell wall
(b) Cytoskeleton
(c) Cell membrane
(d) Nucleus

12. Which of the following is not a function of the cytoskeleton?
(a) Providing structural support
(b) Maintaining cell shape
(c) Enabling cell movement
(d) Producing energy

13. A plant cell is observed to contain stored starch and crystals of calcium oxalate in its cytoplasm. These structures are collectively referred to as:
(a) Cell organelles
(b) Cytoskeleton
(c) Cell inclusions
(d) Chromosomes

14. What is another name for silica?
(a) Calcium carbonate
(b) Calcium oxalate
(c) Sodium oxalate
(d) Calcium bicarbonate

15. What is the nature of the cell wall?
(a) Permeable
(b) Semipermeable
(c) Both (a) and (b)
(d) None of these

16. Which of the following organisms does not have a cell wall?
(a) Cyanobacteria
(b) Spirogyra
(c) Mycoplasma
(d) Rhizobium

17. The genetic material of prokaryotic organisms is present in the:
(a) Nucleolus
(b) Nucleus
(c) Nucleoid
(d) None of these

18. Which of the following is composed of genetic material surrounded by a protein coat?
(a) Viroids
(b) Viruses
(c) Prions
(d) Bacteria

19. Which of the following consists of misfolded proteins and lacks genetic material?
(a) Viroids
(b) Viruses
(c) Prions
(d) Bacteria

20. Which of the following lacks a protein coat around its genetic material?
(a) Viruses
(b) Viroids
(c) Prions
(d) Fungi


🧠 TopperGuru1 Concept Check

Before checking the answer key, ask yourself these two questions for every MCQ:
✅ Why is the correct option right?
✅ Why are the other three options wrong?
If you can explain both, your concept is truly clear. If not, revise the related NCERT concept and try again.
Remember: Real learning happens when you understand the reason, not when you memorize the answer. 

Answer Key: 
1-(c) | 2-(a) | 3-(d) | 4-(d) | 5-(c) | 6-(b) | 7-(b) | 8-(a) | 9-(c) | 10-(a) | 11-(b) | 12-(d) | 13-(c) | 14-(b) | 15-(a) | 16-(c) | 17-(c) | 18-(b) | 19-(c) | 20-(b)

Class 9 Science Chapter 2 Cell MCQs – Keep Practising!

We hope these Class 9 Science Chapter 2 Cell: The Building Block of Life MCQs with Answers helped you test your conceptual understanding of the chapter. These latest concept clarity MCQs are based on the new NCERT Class 9 Science Book 2026–27 Edition and are designed to strengthen your concepts and prepare you for exams.

How many questions did you answer correctly? Check your answers using the answer key above and revise the concepts where you made mistakes.

Keep practising with TopperGuru1 for more Class 9 Science MCQs, concept clarity questions, and chapter-wise practice questions with answers based on the latest NCERT syllabus.

Happy Learning with TopperGuru1! 📚

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