Lab 12review questions cm

Lab 12review questions cm - feeding? 8. What structures do...

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Lab 12: Echinodermata and Chordata Review Questions 1. Define the following terms and give an example of an organism for each. Poikilotherm Water Vascular System Radial Symmetry Ectotherm Aristotle’s Lantern Cloaca/Cloacal Aperature Endotherm Trivium and Bivium Spiral Valve Homeotherm Operculum 2. List and diagram the series of canals through which water flows in a sea star. Diagram a  longitudinal section of the body + one arm, and a cross section of one arm. 3. What is the function of the cardiac stomach in Echinoderms? 4.  Through what structures does food pass when ingested by a sea star, and what type of  digestion (if any) occurs in each? 5. How does a sea star move its arms?
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6. What are the distinct characteristics found in all organisms in the phylum Chordata? 7. What structures do members of the phyla Cephalochordata and Urochordata use for 
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Unformatted text preview: feeding? 8. What structures do members of the Subphyla Cephalochordata, Urochordata, Craniata, and classes Myxini and Petromyzontida lack compared to all other members of the phylum Chordata? 9. What is the function of the spiral valve? 10. What is the function of gill rakers in bony fish? 11. What is the function of the lateral lines in fish? 12. What is the function of the swim bladder and how does it work? How does it compare to the organ with the same function in the shark? 13. Starting with deoxygenated blood, list the structures through which blood flows in the fish heart. 14. How many chambers are there in the sharks heart? 15. What traits distinguish mammals from other chordates?...
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This note was uploaded on 01/15/2011 for the course BIOL 51 taught by Professor Janetkoprivnikar,greggd.jongeward during the Fall '08 term at Pacific.

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Lab 12review questions cm - feeding? 8. What structures do...

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