Unlike other annelids, echiurans ( ). A: have an open circulatory system B: do not possess setae C: undergo radial cleavage D: are not segmented E: have enterocoelous coelom formation
Unlike other annelids, echiurans ( ). A: have an open circulatory system B: do not possess setae C: undergo radial cleavage D: are not segmented E: have enterocoelous coelom formation
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