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Biology 7 Online
SkyVoltage43:

The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. This division is based on which developmental feature? whether the blastopore ultimately develops into a mouth or an *** whether the embryonic cells undergo spiral or radial cleavage whether the coelom forms by splitting the mesoderm or through the pocket of the gut

SkyVoltage43:

@Warriorz13

Warriorz13:

A

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