Which genus of nematodes has special types of nurse cell systems which serve as source of continuous supply of nutrients to the nematodes

Answer: Option D

Meloidogyne, Heterodera, and Globoderagenus of nematodes have special types of nurse cell systems which serve as a source of continuous supply of nutrients to the nematodes.
The nurse cell-larva complex of nematodes of the genus Trichinella plays an important role in the survival of the larva in decaying muscles, frequently favouring the transmission of the parasite in extreme environmental conditions.