Question

which type of symmetry in animals is associated with greater horizontal movement?
asymmetry
bilateral
radial

Explanation:

• Asymmetry: Animals with asymmetry (like some sponges) lack a defined symmetry pattern and are often sessile or have limited movement, not associated with greater horizontal movement.
• Bilateral symmetry: Animals with bilateral symmetry (e.g., humans, dogs, fish) have a distinct front (anterior) and back (posterior), left and right sides. This symmetry is associated with the development of a head (cephalization) and allows for more directed and efficient horizontal movement as sensory organs and nervous system can be concentrated at the front, guiding movement forward.
• Radial symmetry: Animals with radial symmetry (like jellyfish) have body parts arranged around a central axis. They are often adapted for movement in all directions (e.g., floating and moving in water in various orientations) rather than greater horizontal movement in a single - directed way.

Answer:

B. bilateral