問題詳情
53. What is believed to be the most significant result of the evolution of the amniotic egg?
(A) Tetrapods are no longer tied to the water for reproduction.
(B) Tetrapods can now function with just lungs.
(C)Newborns are much less dependent on their parents.
(D) Embryos are protected from predators.
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
用户評論
【GJ】評論
四足類包括兩生類 爬蟲類 哺乳類但要到爬蟲類之後才有羊膜卵(amniotic egg)此演化過程造就爬蟲類之後能保存水分故選A