Taxonomy Tournament: Gastropods
Siphonarioidea. This clade is made up of false limpets, which use a siphon to pump water over their gills.
Sacoglossa. This superorder is made up of solar-powered sea slugs, which ingest the insides of algae cells. This allows some of them to perform photosynthesis using stolen chloroplasts, the only animals to do so.
Which clade of animals is better?
Siphonarioidea
Sacoglossa
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