Answer:
Embryogenesis, fragmentation and sexual reproduction
Step-by-step explanation:
Nematodes can reproduce by embryogenesis, by fragmentation, or parthenogenesis and by sexual reproduction.
Embryogenesis: when they are in larval state they can divide into several organisms.
Fragmentation, or parthenogenesis: a zygote is born without sperm intervention.
Sexual reproduction: The male fertilizes the female and she lays hundreds of eggs.