The table shows the classification of four species of crabs.

Question

Common name Order Family Genus Species
blue crab Decapoda Portunidae Callinectes sapidus
snow crab Decapoda Oregoniidae Chionoecetes opilio
shore crab Decapoda Portunidae Carcinus maenas
spider crab Decapoda Inachidae Macrocheira kaempferi

Which two species of crabs are most closely related?
A.
spider crab and blue crab
B.
shore crab and snow crab
C.
blue crab and shore crab
D.
snow crab and spider crab

Answer 1

C. blue crab and shore crab