Which Lineage Includes Living Members That Are Jawless Vertebrates Called

question 42

Multiple Choice

Which lineage includes living members that are jawless vertebrates called lampreys, which are mostly parasitic as adults?

• A)Urochordata
• B)Cephalochordata
• C)Petromyzontoidea
• D)Placodermi

---

Definitions:

Stereocilia

Hairlike projections on the surface of certain cells, such as those in the inner ear, that respond to fluid motion for sensory functions including hearing and balance.

Basilar Membrane

A key structure in the cochlea of the inner ear, which oscillates in response to sound and aids in the process of auditory transduction.

Tectorial Membrane

A structure found in the inner ear, part of the organ of Corti, which plays a critical role in the process of hearing by supporting hair cells that convert vibrations into nerve impulses.

Basilar Membrane

A structure in the cochlea of the inner ear that plays a key role in the sense of hearing by supporting the hair cells that convert sound vibrations into electrical signals.