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Cell cycle

Written by Dr. Hira Salman (Biology)

9 Class 9 Biology questions with answers and explanations.

Printable worksheet with answer key

All questions with answers
  1. Mitosis produces:

    • 1 Four different cells
    • 2 Gametes
    • 3 Two identical daughter cells
    • 4 One cell
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    Correct answer: Two identical daughter cells

    Mitosis gives two genetically identical daughter cells.

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  2. Meiosis results in cells with:

    • 1 Double the chromosomes
    • 2 Half the number of chromosomes
    • 3 No chromosomes
    • 4 The same number of chromosomes as the parent
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    Correct answer: Half the number of chromosomes

    Meiosis halves the chromosome number to make gametes.

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  3. In which phase of mitosis do chromosomes line up at the equator of the cell?

    • 1 Prophase
    • 2 Anaphase
    • 3 Telophase
    • 4 Metaphase
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    Correct answer: Metaphase

    Chromosomes align at the cell's equator during metaphase.

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  4. Mitosis helps organisms to:

    • 1 Digest food
    • 2 Breathe
    • 3 Make gametes only
    • 4 Grow and repair tissues
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    Correct answer: Grow and repair tissues

    It is used for growth, repair and replacement of cells.

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  5. The number of chromosomes in a normal human body cell is:

    • 1 46
    • 2 23
    • 3 92
    • 4 44
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    Correct answer: 46

    Human body cells have 46 chromosomes, or 23 pairs.

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  6. Cells formed by meiosis are called:

    • 1 Blood cells
    • 2 Gametes
    • 3 Somatic cells
    • 4 Stem cells
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    Correct answer: Gametes

    Gametes are sex cells made by meiosis.

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  7. In mitosis the number of chromosomes in each daughter cell is:

    • 1 Zero
    • 2 The same as the parent cell
    • 3 Double the parent cell
    • 4 Half the parent cell
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    Correct answer: The same as the parent cell

    Mitosis keeps the chromosome number.

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  8. The phase between two cell divisions is called:

    • 1 Telophase
    • 2 Interphase
    • 3 Prophase
    • 4 Metaphase
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    Correct answer: Interphase

    Interphase is the growth and preparation period.

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  9. Which structure helps to move chromosomes during cell division?

    • 1 Spindle fibres
    • 2 Vacuole
    • 3 Cell wall
    • 4 Cilia
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    Correct answer: Spindle fibres

    Spindle fibres pull chromosomes apart.

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