Final answer:
The term cochleoid does not directly describe a galaxy. Instead, it's a mathematical concept. Among listed galaxy types, none are named for their resemblance to a snail, though lenticular galaxies have a structure that may share qualities with the concept of a snail's shell.
Step-by-step explanation:
The term cochleoid does not apply to any particular type of galaxy but is rather a mathematical curve reminiscent of the shape of a snail's shell or cochlea in the ear. However, if asked which of the listed galaxy types is named for its resemblance to a snail, none precisely match this description, as the options given are specific types of galaxies with different characteristics.
A spiral galaxy is a flattened, rotating galaxy with spiral arms extending from the central bulge, containing both old and young stars and interstellar matter. Elliptical galaxies are more spheroidal or elongated, consisting almost entirely of old stars and very little interstellar matter. Lenticular galaxies have a lens-like appearance that shares properties of both spiral and elliptical galaxies. Irregular galaxies, like the Large Magellanic Cloud, have a more chaotic structure.