What is the name of the needlelike mouth part of a nematode?

The needlelike mouth part of a nematode is called a stylet. This structure is crucial for the feeding process of nematodes, allowing them to pierce plant cells or tissues. The stylet functions much like a hypodermic needle, enabling the nematode to extract nutrients or fluids from its host. This feeding mechanism is significant for their survival, especially for plant-parasitic nematodes, which rely on this specialized mouth part to access the intracellular contents of plants.

In contrast, mandibles are jaw-like structures found in some insects for biting and grinding food. A proboscis generally refers to a long, flexible feeding structure found in some insects and other animals, which helps in sucking fluids. Beaks are hard, pointed structures found in birds and certain other animals, designed for eating and often for breaking hard objects. Understanding these distinctions helps clarify the specific role of the stylet in nematode physiology.