Which of these is NOT an arthropod?
A: HorseflyNo. Arthropods have an exoskeleton, a segmented body, and jointed legs. Like other insects, horseflies are arthropods.
B: Fiddler CrabNo. The Fiddler Crab has an exoskeleton, a segmented body, and jointed legs. That tells us that they are arthropods.
C: SnailYes! The body of a snail is not segmented, an does not have any legs, much less jointed legs. It is NOT an arthropod. Instead, it belongs to a group of mollusks called gastropods.
D: Praying MantisNo. The Praying Mantis has an exoskeleton, a segmented body, and jointed legs. Like other insects, a Praying Mantis is an arthropod.
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SC.3.L.15.1 Classify animals into major groups (mammals, birds, reptiles, amphibians, fish, arthropods, vertebrates and invertebrates, those having live births and those which lay eggs) according to their physical characteristics and behaviors.
SC.6.L.15.1 Analyze and describe how and why organisms are classified according to shared characteristics with emphasis on the Linnaean system combined with the concept of Domains.
UT.4.V.3.b Use a simple classification system to classify unfamiliar Utah plants or animals (e.g., fish/amphibians/reptile/bird/mammal, invertebrate/vertebrate, tree/shrub/grass, deciduous/conifers).