Question

1. which phrase describes radial symmetry?

radial symmetry can be likened to a pizza or bicycle wheel, where all the parts are equal and arranged around a central axis.
it is the formation of nervous tissue on the anterior end of an organism.
a central plane can be drawn down the center of a body to create two equal mirror images.
there is no specific or regular form of those with radial symmetry.

Explanation:

Radial symmetry refers to body parts arranged equally around a central axis, like a wheel or pizza. The other options describe cephalization (nervous tissue at anterior end), bilateral symmetry (mirror images via central plane), and incorrect claims about radial symmetry's form.

Answer:

Radial symmetry can be likened to a pizza or bicycle wheel, where all the parts are equal and arranged around a central axis.