字词 | 水螅 |
释义 | 通常进行无性生殖(由身体长出芽体);夏初和秋末进行有性生殖。{hydra (Hydra); hermaphroditic coelenterate that typically has a brown hollow cylindrical body, with a mouth at one end surrounded by tentacles as food catchers, and closed at the other end and attached to water weeds or withered leaves in ponds or marshes, and that reproduces either through parthenogenesis (producing gemma from the body itself) or by sexual reproduction in early summer and late autumn} |
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