Final answer:
An asymmetrical body plan, like that of a sponge, has no symmetry. Radial symmetry has multiple planes through a central axis, as seen in sea anemones. Bilateral symmetry, found in organisms like goats, has only one plane that creates two mirrored halves.The correct answer is option A.
Step-by-step explanation:
Differences in Asymmetry, Radial, and Bilateral Body Plans
An asymmetrical body plan is one that exhibits no pattern or symmetry, such as a sponge. These organisms don't have a defined shape that repeats across their body.
Radial symmetry is a type of symmetry where the body has a central axis, and any slice through this axis results in similar halves, as seen in sea anemones.
Bilateral symmetry is when only a single plane divides the organism into two mirrored halves, which is common to many animals, including humans. An example is a goat, where the left and right sides are mirror images but there is a distinct front (anterior) and back (posterior).
An asymmetrical body plan differs from radial or bilateral plans in that it lacks any sort of symmetry, meaning there is no way to divide the organism into two similar or mirrored parts.
Radial symmetry allows for multiple planes of division through a central axis, and is often found in organisms that remain stationary or move very little. Bilateral symmetry permits only one plane of division and is associated with animals that have a directional movement and requires distinct sensory organs at one end of the body.The correct answer is option A.