In which of the following organisms, self-fertilization is rarely seen?
A
Fish
B
Roundworm
C
Earthworm
✓
Liver fluke
✓
Answer
Correct option: D.
Liver fluke
d Generally, cross-fertilization takes place in liver fluke (Fasciola hepatica), rarely self-fertilization takes place. Fertilization is internal in liver fluke.
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