The Name Urochordata Means Literally

Q16: A dorsal tubular nerve cord is<br>A)another name

Q17: Salps in the class Thalacea<br>A)are barrel-shaped open-ocean

Q18: The central definition of a monophyletic group

Q19: The urochordates are<br>A)called tunicates.<br>B)marine animals.<br>C)sessile as adults,but

Q20: Development of the vertebrate head and sense

Q22: Unlike most invertebrate phyla,the nerve cord of

Q23: One example of why a cladist is

Q24: All chordates have<br>A)a single,dorsal,tubular,nerve cord.<br>B)a ventral heart.<br>C)pharyngeal

Q25: The ostracoderms<br>A)are the adult form of the

Q26: The perforated pharynx of chordates first evolved