Sensory nerve: Carries impulses from receptors/sense organs to the central nervous system (brain/spinal cord).
Motor nerve: Carries impulses from the central nervous system to effectors (muscles/glands).
For a 1-mark difference question, one clear contrasting point is sufficient. Examiners look for the direction of impulse travel — sensory nerves carry impulses towards the CNS, motor nerves carry impulses away from the CNS. Avoid writing extra points; one sharp contrast earns full marks.