問題詳情
4. As a group, acoelomates are characterized by
(A) deuterostome development.
(B) the absence of a brain.
(C) a coelom that is not completely lined with mesoderm.
(D) a solid body without a cavity surrounding internal organs.
(E) the absence of mesoderm.
(A) deuterostome development.
(B) the absence of a brain.
(C) a coelom that is not completely lined with mesoderm.
(D) a solid body without a cavity surrounding internal organs.
(E) the absence of mesoderm.
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