What this practice covers
These questions are drawn from past CIE 9700 Biology papers and filtered to chromosome behaviour in mitosis. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on chromosome behaviour in mitosis, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying chromosomes "are made" in prophase. They exist already; they condense and become visible.
- Saying chromosomes line up in pairs at metaphase. That is meiosis. In mitosis they line up singly.
- Calling cytokinesis a stage of mitosis. Mitosis is nuclear division.
- Including interphase cells in the numerator of the mitotic index.
- Saying plant cells have no spindle because they have no centrioles. They form a spindle without them.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Chromosome behaviour in mitosis revision notes.