Question

Lancelets and tunicates are two groups of chordates. Classify each statement as applying to lancelets, tunicates, both lancelets and tunicates, or neither.

Drag each item to the appropriate bin.

Answer 1

Lancelets:
All chordate characters present in adults
Adults bury themselves into the sediment of the seafloor
Adults swim by the contraction of a series of muscles along the notochord

Tunicates
Most chordate characters not present in adults
Larvae swim using the notochord, but adults may be sessile
In adults, water enters through one siphon and leaves through another

Both
Adults feed with the aid of pharyngeal slits

Neither
Adults swim using the vertebral column