Radial symmetry
Irregular galaxies show no distinct feature or symmetry.
SYMMETRY
name one anatomical feature (other than symmetry) that distinguishes a planarian from a hydra.
They are all soft-bodied.
Derived Character
It's homoplasy.
Gill supports
Proportion
Proportion is attained when a painting has both balance and symmetry among different parts of the work.
Halo Combat Evolved was the first game to feature the Flood. They are first encountered in the level 343 Guilty Spark.
Spikes are a protective feature that has evolved over time to save them from predators.
The key feature of career development is acquiring more knowledge as skills in the particular field. Experience also plays an important role.