Answer
You would need to look for the presence of haploid sperm and oocytes in the same organism as well as a way for both gametes to be joined.
Work Step by Step
The question describes some varieties of roundworms, where the females have adapted to self-fertilize due to the scarcity of males. Oocytes are fertilized in the female’s spermatheca from her own sperm, and offspring are genetic copies of her.
