why is bilateral symmetry most advanced
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Answer:
In order to fully define bilateral symmetry, we need to first define symmetry. Symmetry has to do with the orientation of an organism based on a plane or around an axis. Considering the different shapes and orientations of various organisms, scientists have come up with three basic types of symmetry.
The last type of symmetry is the bilateral symmetry. Bilateral symmetry is when the body plan can be divided along a plane that splits the animal's body into right and left sides that are mirror images of each other. Let's look at this type of symmetry a little more.
All vertebrates have bilateral symmetry as well as some invertebrates. Bilateral symmetry refers to both sides of the body being a mirror image of each other when viewed across a central axis. On either side of the central axis, the arrangement of an animal’s body parts is the same. This only applies to the body shape, not the internal organs.
Bilaterally symmetrical animals have two main advantages over radially symmetrical ones1. Greater mobility•Can move through the environment in a consistent direction2. Anterior cephalization•Evolution of a definite brain area (central nervous system)