Question

1. which phrase describes radial symmetry?

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.
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.

Explanation:

• Option A describes bilateral symmetry (a central plane creating two mirror - image halves).
• Option B is incorrect as organisms with radial symmetry have a regular, repeating pattern around a central axis.
• Option C correctly describes radial symmetry: just like a pizza (slices around the center) or a bicycle wheel (spokes around the central axis), the body parts are arranged symmetrically around a central axis.
• Option D is about the formation of nervous tissue (related to cephalization in some organisms) and has nothing to do with radial symmetry.

Answer:

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