Question

select all that apply
select all of the following that are true about lampreys.

cartilage surrounds nerve cord
sessile adults bury their tails in sediment
some have sucker - like mouths
live in fresh and salty water
considered invertebrate chordates

Explanation:

Lampreys are vertebrates (not invertebrate chordates), so the last option is false. Lampreys have a notochord (cartilage - like structure) that surrounds the nerve cord. Some lampreys are parasitic and have sucker - like mouths. They can live in both fresh and salt water. Adult lampreys are not sessile (they are free - swimming or parasitic feeders), so the option about sessile adults burying tails in sediment is false.

Answer:

cartilage surrounds nerve cord, some have sucker - like mouths, live in fresh and salty water