A) Fish
B) Roundworm
C) Earthworm
D) Liver fluke
Correct Answer: D
Solution :
Fertilization is the fusion of haploid male gamete and a haploid female gamete to form a diploid cell, the zygote, called fertilization or syngamy. Self-fertilization occurs in hermaphrodite or bisexual organisms. Self-fertilization includes fusion of male and female gametes formed by the same individual. Generally cross fertilization takes place in liver fluke (Fasdola hepatica) rarely self-fertilization takes place. Fertilization is internal in liver fluke.
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