NEETBiologyAnimal KingdomMCQ+4 / −1
One example of animals having a single opening to the outside that serves both as mouth as well as anus is
- AOctopus
- BAsterias
- CAscidia
- DFasciola.
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Correct answer: D
Fasciola, a flatworm has a single body cavity to the outside that serves both as mouth for ingestion and anus for egestion of undigested food. This is known as blind sac plan.
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