skeet21 skeet21
  • 04-04-2020
  • Biology
contestada

. In which phylum do organs and organ systems first appear?
a. Annelida
b. Hemichordata
c. Nematoda
d. Platyhelminthes​

Respuesta :

alexiaesco3565
alexiaesco3565 alexiaesco3565
  • 04-04-2020

Answer:

The answer is d. Platyhelminthes

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