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Biological Evolution: Unity and Diversity: Vertebrates and Invertebrates
Arachnids
Description
Arachnids
Arachnids are a group of invertebrates that include spiders, scorpions, ticks, and mites. They belong to the arthropod phylum and are known for having eight legs, two body segments (a cephalothorax and an abdomen), and no antennae. Arachnids are adapted for hunting, de...
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Transcript
Imagine a spider weaving its web, or a scorpion raising its stinger. They are part of the arthropod family, but they belong to a special group within it called arachnids.
Most notably, adult arachnids have eight legs.
They also have two pairs of appendages. The first pair helps with feeding and defense, while the second pair, in add...
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