4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.
涡虫是雌雄同体的，生殖系统适于体内受精。单起源的吸虫（单殖纲）大多是鱼的外
生虫。
词条纠错
X
reproductive system
生词本：
添加笔记：
生殖系统
Trochus pyramis Born is of gonophores.The male reproductive system is mainly composed of the spermaries and spermaductus, instead of mating and others glands.
摘要塔形马蹄螺为雌雄异体，其雄
生殖系统主要由精巢和输精管组成，没有交接器，也没有其他的附属腺体。
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reproduction cost, reproductive, reproductive capability, reproductive cell, reproductive organ, reproductive system, reprofile, reprogenetics, reprogram, reprograming,
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