1.

Fertilisation and development in earthworm are respectively A)  Internal, DirectB)  External, DirectC)  Internal, IndirectD)  External, Indirect​

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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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