Which of these is NOT an arthropod?
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A: Horsefly
No. Arthropods have an exoskeleton, a segmented body, and jointed legs. Like other insects, horseflies are arthropods. -
B: Fiddler Crab
No. The Fiddler Crab has an exoskeleton, a segmented body, and jointed legs. That tells us that they are arthropods. -
C: Snail
Yes! 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 Mantis
No. The Praying Mantis has an exoskeleton, a segmented body, and jointed legs. Like other insects, a Praying Mantis is an arthropod.
Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.
Florida
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.
| Feathers | video, checked |
| A Walk in the Park | video, checked |
| Scientific Names | video, ClosedCaptions |
| Review Classify-2 | practice |
| Review Classify-1 | practice |
| Review Classify-3 | practice |
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.
| Scientific Names | video, ClosedCaptions |
| Review Classify-2 | practice |
| Review Classify-1 | practice |
| Review Classify-3 | practice |
Utah
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).
| A Walk in the Park | video, checked |
| Scientific Names | video, ClosedCaptions |
| Review Classify-2 | practice |
| Review Classify-1 | practice |
| Review Classify-3 | practice |
UT.7.V.2.c Generalize rules for classification.
| Scientific Names | video, ClosedCaptions |
| Review Classify-2 | practice |
| Review Classify-1 | practice |
| Review Classify-3 | practice |