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DAT Bootcamp Animal Behavior Practice Exam

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Which migratory cue relies on Earth's magnetic field (magnetoreception)?
Correct Answer:
Sun compass
Explanation:
Magnetoreception is the ability to sense Earth's magnetic field and use its direction to navigate. Migratory animals can detect the inclination and intensity of the field to determine heading, effectively acting as a magnetic compass that helps them orient toward their destination. This is distinct from a sun-based cue, which relies on the Sun’s position and an internal clock, or a star-based cue, which uses celestial patterns. Landmarks and olfactory cues provide local environmental information rather than global magnetic information. So the cue that relies on Earth's magnetic field is the magnetic field cue, reflecting magnetoreception in navigation.

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