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Cell: The Unit of Life

Cell Theory and the Basic Unit of Life Practice Questions

20 free Cell Theory and the Basic Unit of Life practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.

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All Cell Theory and the Basic Unit of Life questions

20 questions
  1. Q1. Who first observed and described a live cell?
  2. Q2. In 1838, Matthias Schleiden, a German botanist, examined a large number of plants and concluded that:
  3. Q3. Theodore Schwann, after studying different types of animal cells, reported that cells had a thin outer layer which is today known as the:
  4. Q4. Which scientist modified the hypothesis of Schleiden and Schwann to give the cell theory a final shape?
  5. Q5. The statement 'Omnis cellula-e cellula' means:
  6. Q6. Which of the following is an exception to the cell theory?
  7. Q7. The smallest cell, measuring only 0.3 micrometers in length, is:
  8. Q8. What is the typical size range of a human Red Blood Cell (RBC)?
  9. Q9. Among the following, which is the largest isolated single cell?
  10. Q10. The shape of the cell may vary with the _______ they perform.
  11. Q11. Both prokaryotic and eukaryotic cells contain a semi-fluid matrix where main cellular activities occur. This is called:
  12. Q12. Non-membrane bound organelles found in both eukaryotic and prokaryotic cells are:
  13. Q13. Which organelle is found only in animal cells and helps in cell division?
  14. Q14. What is the genomic material of a prokaryotic cell called when it is not enveloped by a nuclear membrane?
  15. Q15. Which of the following statements about cell theory is FALSE?
  16. Q16. The intensive study of the cell under the electron microscope became possible only after:
  17. Q17. An example of a cell that is long and branched is the:
  18. Q18. Cells which lack a well-defined nucleus and membrane-bound organelles are called:
  19. Q19. Which of the following scientists concluded that the presence of a cell wall is a unique feature of plant cells?
  20. Q20. The volume of a cell is generally proportional to: