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Arachnids
Literally meaning “spider”, this class of animals with jointed legs is placed in the subphylum Chelicerata. Generally, each species has eight legs but some use the first pair for sensory purpose. In certain other cases, the appendages may grow enough in size to assume the shape of extra pairs of legs. Mostly, they are found in terrestrial environments, but some inhabit marine and freshwater bodies. Tick, scorpion, crab spider, red-kneed tarantula, water spider and garden spider are some to the examples of arachnids.
