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Fertilisation and development in earthworm are respectively A) Internal, DirectB) External, DirectC) Internal, IndirectD) External, Indirect |
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Answer» Explanation: Several common earthworm species are mostly PARTHENOGENETIC, meaning that growth and DEVELOPMENT of EMBRYOS happens WITHOUT fertilization. ... Earthworms are HERMAPHRODITES; that is, they have both male and female sexual organs. The sexual organs are located in segments 9 to 15. |
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