IB Biology HL 3.1.9 Reflex arcs Question Bank
Practise IB Biology HL 3.1.9 by analysing reflex-arc pathways and the spinal coordination of involuntary actions.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Trace impulse direction through receptor, sensory, relay and motor neurons.
- Evaluate how the spinal cord coordinates involuntary responses using reflex-arc evidence.
C3.1.9—Pain reflex arcs question 1
[Maximum number: 3]
List the sequence of the components of a reflex arc for a pain withdrawal reflex.
Marking guidance:
Award [1] for each two correct and [1] for a correct sequence of three answers. receptor (cell) / named receptor cell; sensory neuron; relay neuron / interneuron;
motor neuron; effector/appropriate example; (eg: muscle)
Marks can be awarded for a clearly drawn correctly labelled diagram.
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