Most chordates have which type of skeleton?Multiple choice question.ExternalInternalLack a skeletonChitinous

Chordates have a Blank______ that develops down the length of an embryo that allows for muscle attachment.Multiple choice question.notochordflexible rodbackbone

At some point in their life cycle, all chordates have a postanal tail, ______, hollow nerve cord, and ______.Multiple choice question.pharyngeal slits or pouches; endoskeleton made of bone or cartilagelungs; notochordnotochord; pharyngeal slits or pouchesendoskeleton made of bone or cartilage; lungs

Which of the following is a characteristic of all chordates?Group of answer choicesThey all have vertebral columns.They all exhibit radial symmetry.They all have a notochord sometime during the life cycle.They all have an exoskeleton sometime during the life cycle.They all have a pseudocoelom.

In what type of chordate is the spinal cord surrounded by a backbone composed of cartilage or bone?Multiple choice question.lanceletsvertebrateshagfishesurochordates

Chordates that have jaws, vertebrae, gills, and fins are calledMultiple choice question.fishes.lancelets.hagfishes.lampreys.