Which of the following is an egg parasite of nematodes?

✅Explanation:
Pasteuria penetrans is a bacterial parasite that specifically targets the eggs of nematodes. It attaches to the eggs of various plant-parasitic nematodes and inhibits their hatching, thus acting as a biocontrol agent for nematode populations. This bacterium is a well-known egg parasite of nematodes. It attaches to the surface of nematode eggs, infecting them and preventing hatching. It is widely researched for its potential in biological control of nematode pests.