In nematode, tylenchids stylet develop from

Answer: Option B

In nematode, tylenchids stylet develops from Buccal wall.
This stylet is used to pierce the cell wall to inject secretions into the plant cell or to ingest nutrients from the cytoplasm.
It also serves to pierce and cut openings in the cell walls and to release secretions that dissolve or weaken the cell wall or middle lamella.