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Mazyrski [523]
4 years ago
14

All animals, except for _____, develop as a protostome.

Biology
1 answer:
Maurinko [17]4 years ago
7 0
<span>Protostomes represent animals whose embryonic cells cleave in a spiral an the mouth opening develops before the anus. These animals do not always have a body cavity. Sponges, mollusks and arthropods are protostomes. Echnioderms, vertebrates and chordates are not protostomes, they are deuterostomes. Deuterostomes develop the anus before the mouth, cleave radial and have a true body cavity.</span>
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