What type of symmetry is found in animals that can be divided into similar halves along one plane?

Bilateral symmetry is characterized by the ability to divide an organism into similar halves along a single plane, typically resulting in mirrored left and right sides. This type of symmetry is common in many animals, including humans, where the body is organized with a distinct front (anterior) and back (posterior) end, as well as a top (dorsal) and bottom (ventral) side.

In animals exhibiting bilateral symmetry, structures such as limbs and eyes are often organized in pairs, which supports coordinated movement and interactions with the environment. This symmetry is essential for development and evolutionary adaptations that facilitate active lifestyles and complex behaviors.

In contrast, radial symmetry involves body parts arranged around a central axis, which allows for multiple planes of symmetry, as seen in organisms like jellyfish. Asymmetry refers to organisms that do not have any symmetry, such as sponges, which cannot be divided into similar halves. Therefore, the distinct organization and division of body structures in bilateral symmetry is what makes this the correct answer.