Final answer:
Nematodes can be found in soil, freshwater, and ocean sediments, while Annelids are found in marine, terrestrial, and freshwater habitats, including inside animals and plants.
Step-by-step explanation:
Nematodes, also known as roundworms, can be found in various habitats such as the soil, freshwater, and ocean sediments.
They are not commonly found inside plants or animals.
Annelids, on the other hand, are segmented worms that can be found in marine, terrestrial, and freshwater habitats, including inside animals and inside plants.
Therefore, the habitats where Nematoda are found and Annelida are not found are a) Inside plants and b) Inside animals.