Pennatula · Sea pen

Pennatula belongs to phylum Coelenterata (cnidaria).

KingdomAnimaliaPhylumCoelenterata

Classification of Pennatula

KingdomAnimalia
PhylumCoelenterataCnidaria
Common nameSea pen
NCERTClass 11 Biology, Chapter 4: Animal Kingdom

Why it's in Coelenterata

Coelenterata: Stinging cells (cnidoblasts) on the tentacles; a central gastro-vascular cavity; two body forms, polyp and medusa.

Other NCERT examples of Coelenterata

PhysaliaPortuguese man-of-warCoelenterata
AdamsiaSea anemoneCoelenterata
GorgoniaSea fanCoelenterata
MeandrinaBrain coralCoelenterata
AureliaJellyfishCoelenterataA medusa form.
ObeliaA hydroidCoelenterataShows metagenesis: polyps make medusae and medusae make polyps.
HydraHydraCoelenterataA freshwater polyp.

All about Coelenterata →

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