Invertebrates

Invertebratesc. See attached file for full problem description.

Lab

Laboratory 25- The Chordates 1. Describe characteristics for deuterostomes. 2. List phyla with deuterostomes. 3. List the subphyla of chordates and give an example of each. 4. Describe the general characteristics of echinoderms. 5. List and describe the four chordate characteristics. Structure Function notochord dorsal nerve cord ventral fin gill slits mouth/oral hood vestibule atripore Pharynx 10. Why is it important to study the lancelet? 11. Why isn’t a lancelet considered to be a vertebrate? 11. Identify parts and give function (if possible) for the following structures of the frog. External Anatomy Organ System Function description nictitating membrane ... click for more

Capillary Bed

Blood entering a capillary bed of a vertebrate was measured for the pressures exerted by various factors Arterial End of Capillary Bed Venous End of Capillary Bed Hydrostatic Pressure 8 mm Hg 14 mm Hg Osmotic pressure 26 mm Hg 26 mm Hg PO2 100 mm Hg 42 mm Hg PCO2 40 mm Hg 46 mm Hg For this capillary bed, which of the following statements is correct a) fluids will leave the ... click for more

Gaseous exchange in earthworm & polychaetes

1. How is gas exchange accomplished by earthworms? 2. What is the function of the nephridia of the molluscs? 4. How does gas exchange take place in marine polychaetes? 5. How does the body organization of crustaceans differ from the body organization of flightless insects? 6. Name and list four characteristics of arthropods that have enabled them to be extremely successful, and describe the adaptive value of each characteristic.

Biology Questions

1. List the characteristics of the phylum chordata. Compare and contrast the three subphyla of the chordates. 2. Explain why the evolution of jaws around the mouth was a critical innovation in vertebrate evolution. 3. Although amphibians were the first animals to move onto dry land, they were still dependent on water for reproduction and lor respiration. What evolutionary adaptations allowed reptiles to become the first "true" land vertebrates? 4. What structural and physiological specializations have occured in birds that allow them to fly? 5. Distinguish between the three types of mammals on the basis of their modes of reproduction. Give examples of each. 6. Compare and contras... click for more