What this practice covers
These questions are drawn from past CIE 0654 Co-ordinated Sciences papers and filtered to coordination and response. 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.
Start practising practice questions →
What examiners see students get wrong here
These are the errors that cost marks on coordination and response, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying a reflex impulse travels to the brain first.
- Saying an impulse jumps the synapse electrically.
- Saying the lens does most of the focusing. The cornea does; the lens fine-tunes.
- Saying suspensory ligaments tighten when the ciliary muscles contract.
- Saying insulin converts glycogen to glucose. That is glucagon.
- Saying blood vessels move deeper into the skin when cold.
- Saying auxin makes the lit side of a shoot grow faster.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Coordination and response revision notes.