Choose the correct option.
A. Segmentation – Annelida
B. Archenteron – Heart Formation
C. Ostia – Sea anemone
D. Polyp Medusa – Phylum Ptenopora
Answer:A
Choose the correct option.
A. Segmentation – Annelida B. Archenteron – Heart Formation C. Ostia – Sea anemone D. Polyp Medusa – Phylum Ptenopora