Chapter 34

Chapter 34 - Chapter 34 - Vertebrates 1) Chordates have a...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 34 - Vertebrates 1) Chordates have a notochord and a dorsal, hollow nerve chord a) Chordates are deuterostome bilaterian animals b) 2 chordate subphyla are invertebrates i) Urochordata ii) Cephalochordata c) Vertebrata is also a subphylum of chordata 2) Derived Characters of Chordates a) All chordates share 4 derived characters b) Although some species posses some of these traits only during embryonic development 3) Tunicates a) Subphylum Urochordata b) Deepest-branching lineage of chordates c) Sessile marine suspension feeders i) Draws water in through incurrent siphon, filtering food particles d) Tunicates posses the chordate characteristics during their larval stage 4) Lancelets a) Subphylum Cephalochordata b) Marine suspension feeders c) Retain chordate features throughout lifespan 5) Craniates are chordates that have a head a) The origin of the head in chordates allowed some to become active predators b) Shared characters in craniates i) Skull ii) Brain iii) Eyes and other sensory organs
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 4

Chapter 34 - Chapter 34 - Vertebrates 1) Chordates have a...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online