An individual zooid or animal unit within an ascidian colony that resembles or functions as a single ascidian organism.
From Latin 'ascidium' (sac) plus Greek 'zoon' (animal) plus '-oid' (resembling), referring to individual units in colonial structures.
Scientists wonder if colonial ascidiozooids are truly separate 'individuals' or all part of one giant organism—it challenges how we even define what a single animal is!
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