Bilateral symmetry, segmentation, coelom and open circulatory system are the characteristics of _________.
Arthropoda
The correct answer is Arthropoda.
Segmentation, or metamerism, allows for specialization of body regions and efficient movement. Symmetry (asymmetry, radial, or bilateral) relates to how an animal interacts with its environment. Bilateral symmetry is associated with active movement and cephalization (concentration of sensory organs at the head end). Arthropods are incredibly successful, largely due to their exoskeleton, segmentation, and adaptability to various environments, supported by their open circulatory system efficiently bathing tissues.
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