Poriferians are more primitive than cnidarians, mention some character

1.	Poriferians are more primitive than cnidarians, mention some characteristics of it to justify
Answer» Porifera are more primitive because the do not have germ layer, nervous system and specialized cells for defense. They were evolved in 600 MYA. Cindarians are modern than porifera as they evolved in 580 MYA. They have germ layers and nervous system and specialized cells for defense and self protection.

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