Which class has no antennae?

Optimize your Entomology 1 PMT exam preparation with our targeted study material. Engage with our flashcards and multiple choice questions, complete with hints and detailed explanations. Get exam-ready today!

Multiple Choice

Which class has no antennae?

Antennal structures are sensory appendages on the head of many arthropods used to sense chemicals, touch, and other environmental cues. Insects and the myriapods (millipedes and centipedes) all have a pair of antennae that help them explore their surroundings. Arachnids do not have true antennae. They rely on pedipalps for some sensory input and on setae (tiny hairs) on their legs and body, along with other specialized organs, to detect vibrations, chemistry, and temperature. This absence of antennae is why arachnids are the class without them. Spiders, scorpions, ticks, and mites are examples of arachnids that use these alternate senses to interact with their world.

Antennal structures are sensory appendages on the head of many arthropods used to sense chemicals, touch, and other environmental cues. Insects and the myriapods (millipedes and centipedes) all have a pair of antennae that help them explore their surroundings. Arachnids do not have true antennae. They rely on pedipalps for some sensory input and on setae (tiny hairs) on their legs and body, along with other specialized organs, to detect vibrations, chemistry, and temperature. This absence of antennae is why arachnids are the class without them. Spiders, scorpions, ticks, and mites are examples of arachnids that use these alternate senses to interact with their world.

More practice questions