30. In which vertebrates is fertilization exclusively internal?
(A) chondrichthyans, osteichthyans, and mammals
(B) amphibians, mammals, and reptiles
(C) chondrichthyans, osteichthyans, and reptiles
(D) reptiles and mammals
(E) reptiles and amphibians

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統計: A(3), B(3), C(4), D(63), E(7) #944330

詳解 (共 2 筆)

#4912393
魚和兩棲類都有體外受精
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#7165100
這是一份關於脊椎動物受精方式的詳細解題說...
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