1.

One example of animals having a single opening to the outside that serves both as mouth as well as anus isA. OctopusB. AsteriasC. AscidiaD. Fasciola

Answer» Correct Answer - D
Fasciola hepatica (sheep liver fluke) belongs to phylum-Platyhelminthes.
These worms have incomplete alimentary canal, there is a single opening for both ingestion and egestion. This is also called as blind sac body plan.


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