Identify the animal below that is not in the same class as the others.
Crayfish
Crabs
Scorpions
Lobsters

Question

Identify the animal below that is not in the same class as the others.
Crayfish
Crabs
Scorpions
Lobsters

anonymous · Answer

Which one is unlike the others?

abhisar · Answer

I think its scorpion

anonymous · Answer

Why do you think it is a scorpion?

abhisar · Answer

scorpion is an arachnid

anonymous · Answer

True. And what about crayfishes, lobsters, and crabs?

anonymous · Answer

i dont know

abhisar · Answer

rest are crustaceans or Malacostraca to be more precise !

abhisar · Answer

@Cynical1

anonymous · Answer

Bingo! great job :)

anonymous · Answer

i am still lost

anonymous · Answer

@1996nightrider think about the number of appendages each have. Lobsters, crab, and crayfish each have 5 pairs of appendages. Scorpions only have 4.

anonymous · Answer

ok thank you

anonymous · Answer

You can also think about their habitats. Crayfish, crabs, and lobsters are all aquatic organsims. A scorpion lives in a terrestrial (ie: not aquatic) environment.

anonymous · Answer

Most biology textbooks include a break down of all the major arthropod classes though