A sensillum is a hollow hair-like tube that typically has a pore on the end and contains multiple chemoreceptor cells inside. They are specialized structures used to detect chemical stimuli such as odors, taste, or pheromones in invertebrates, primarily in insects.

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What Is a Sensillum

Question 25

Multiple Choice

What is a sensillum?

A) a structure located on the antennae, foot, or mouthparts of aquatic insects
B) a structure common to earthworms, insects, and cnidarians
C) a specialized smell receptor in invertebrates
D) a hollow hair-like tube characterized by a pore on the end and multiple chemoreceptor cells inside

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