Biology / Unit 10 Bio 2273 short lesson, about 20 seconds
"An Insect and a Spider Are Both Bugs"
Captions available
The idea
Calling both an insect and a spider a "bug" collapses a real distinction — the two belong to separate arthropod subphyla with different plans.
In practice
An insect has six legs, three body regions, and antennae; a spider has eight legs, two body regions, and no antennae.
Where people slip
This entry states the informal-language misconception — Bio 2275 gives the traits that separate these two groups.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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