20. Choose the mismatched pair of terms (i.e. the one
that is NOT correct).
Chondrichthyes: Fish with jaws, paired fins & an
endoskeleton made of cartilage.
Cephalochordata: Fish with jaws, unpaired fins & an
endoskeleton made of bone.
Lungfish: Lobe-finned fish with lungs & sturdy,
jointed bones in its paired fins. ?
Actinopterygii: Fish with jaws, paired fins with rays
& an endoskeleton made of bone.
Urochordata: Swimming larvae have notochords, but
sessile adults are invertebrates.