Bilateral Symmetry
좌우대칭
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<speciesfyi-glossary slug="bilateral-symmetry"></speciesfyi-glossary>Definition
A body plan in which the organism can be divided into mirror-image left and right halves along a single plane.
Detailed Explanation
Bilateral symmetry is associated with directed movement — having a distinct front end (head) promotes cephalization, the concentration of sensory organs and neural tissue at the anterior. This head-first orientation is adaptive for active predators and prey. Most motile animals, from flatworms to humans, show bilateral symmetry, which allows for coordinated, directional locomotion through environments.