Larval and Adult Tunicates Look Virtually Nothing Alike

Q36: Pikaia gracilens,the earliest known chordate collected from

Q37: Outline the process that may explain how

Q38: The skeletal rod found in all chordates

Q39: In both tunicates and cephalochordates,the ventral side

Q40: The ammocoete larvae is important in zoology

Q42: One overriding advantage of the endoskeleton of

Q43: The lancelets or Branchiostoma are found<br>A)very rarely

Q44: The early vertebrate fossils belong to an

Q45: The urochordates are enclosed in a nonliving

Q46: Cephalochordates<br>A)are small fish-like,freshwater animals.<br>B)have a notochord only