Class 9
Science
Chapter 2
Exploration (latest NCERT)
Cell: The Building Block of Life
Free NCERT practice questions for Class 9 Science, Chapter 2 — 113 questions across MCQs, short-answer, long-answer and more. Download a printable PDF worksheet in seconds. No signup, no ads, no paywall.
What this chapter covers
Class 9 Science Chapter 2 'Cell: The Building Block of Life' from NCERT Exploration takes students inside the cell. The chapter covers the discovery of cells, the cell theory, prokaryotic vs eukaryotic cells, the structure and function of the cell membrane, cytoplasm, nucleus and major organelles (mitochondria, ER, Golgi body, lysosomes, plastids, vacuoles). Diffusion, osmosis and the basics of mitosis and meiosis are also introduced.
Key topics in this chapter
- Discovery of the cell and the cell theory
- Prokaryotic and eukaryotic cells
- Cell membrane, cytoplasm and nucleus
- Mitochondria, ER, Golgi, lysosomes, plastids, vacuoles
- Diffusion, osmosis, mitosis, meiosis
Sample questions from this chapter
Here are 6 real questions students will encounter when they generate a worksheet for this chapter. Every question includes the answer.
MCQ
Medium
1 mark
In a prokaryotic cell, the genetic material lies in a region called the:
(a) Nucleus
(b) Nucleoid
(c) Nucleolus
(d) Cytoplasm
Answer: Nucleoid
Short Answer
Medium
3 marks
Differentiate between the cell membrane and the cell wall on the basis of permeability.
Answer: • Cell membrane: selectively permeable; allows only certain substances to pass.
• Cell wall: fully permeable; water and dissolved minerals pass freely.
• Cell membrane is present in all cells; cell wall only in plants, fungi, bacteria.
Fill in the Blank
Medium
1 mark
Chromosomes are composed of DNA and associated __________.
Answer: proteins
Very Short
Medium
1 mark
Name the three types of plastids found in plant cells.
Answer: Chloroplasts, leucoplasts and chromoplasts.
True / False
Medium
1 mark
State whether True or False: Ribosomes are membrane-bound organelles.
Answer: False. Ribosomes are not membrane-bound.
Long Answer
Hard
5 marks
Compare mitochondria and chloroplasts. How are they structurally and functionally similar and different?
Answer: Similarities:
• Both are double-membrane organelles.
• Both contain their own DNA.
• Both are involved in energy of the cell.
Differences:
• Mitochondria release energy by breaking down food.
• Chloroplasts make food by photosynthesis.
• Chloroplasts are green (have chlorophyll); mitochondria are not.
• Chloroplasts are found only in plant cells; mitochondria in both plant and animal cells.
Generate a worksheet with all 113 questions →
Frequently asked questions
What is included in Class 9 Science Chapter 2 (Cell: The Building Block of Life)?
This chapter has 113 NCERT-aligned practice questions covering all the concepts from the Exploration textbook's Chapter 2. Questions span easy, medium and hard levels across 9 different formats so students get a balanced practice set.
Are these questions based on the new NCERT Exploration textbook?
Yes. Every question on Practico for Class 9 Science is mapped directly to the latest NCERT Exploration textbook (the one CBSE schools are using now). The chapter numbers and chapter titles match the textbook exactly.
How many questions can I practice from this chapter?
113 questions are available right now. You can pick how many you want at a time — generate 10 quick MCQs, a 30-question worksheet, or a full exam-style mix. Each generation gives you a different random set.
Can I download a free PDF worksheet for Cell: The Building Block of Life?
Yes — completely free, no sign-up required. Pick this chapter, choose the number of questions and types you want, and download a printable PDF (with or without answers) in one click.
What question types are available?
This chapter has assertion reason, fill blank, image, long, match, mcq, short, true false, very short. You can mix any combination, or filter to just the type you want to practice — for example, only numericals to drill calculation, or only short-answer questions for exam revision.
Is Practico aligned with CBSE exam patterns?
Yes. Practico questions are tagged by marks (1, 2, 3, 5) and by difficulty (Easy/Medium/Hard) just like CBSE exam blueprints, so you can build a worksheet that mirrors a real unit test or annual exam.