Laboratory Review 29 1. What kind of development, protostome or deuterostome, is

Question

Laboratory Review 29 1. What kind of development, protostome or deuterostome, is common to chordates and echinoderms? 2. Is the nerve cord dorsal or ventral in the invertebrate chordates, tunicates and lancelets? 3. What structure is replaced by the vertebral column in vertebrate chordates? 4. Do cartilaginous fishes or ray-finned fishes have a bony skeleton? 5. What term refers to terrestrial vertebrates that have four limbs? 6. What do reptiles produce that ensures their embryos won't dry out on land? 7. What term refers to the changes that occur when an aquatic tadpole becomes a frog with limbs and lungs? 8. What is the name of the membranous covering associated with the heart? 9. What structure in the frog receives materials from the large intestine, mesonephritic ducts, and the reproductive organs? 10. Which animals have modified scales covering their bodies, have scales on their feet, lay shelled eggs, and have internal organs and skulls that provide evidence to classify them as reptiles? -11. what organs arepresent if a vertebrate has a pulmonary system of circulation with ? pulmonary capillaries? 12. How many ventricles are present in the heart of an amphibian and most reptiles? 13, Which vertebrates have air sacs attached to their lungs that make the lungs more efficient? 14. What organs, present in all the vertebrates, produce urine and maintain the proper balance of fluids and salts in the blood? Thought Questions 15. a. Does the circulatory system of fisbes have a pulmonary circuit? Explain your answer b. Given the attachment of gills to the pharynx, explain the absence of a trachea in fishes and the need for a trachea in mammals. 16. What is the role of the four-chambered hearts of birds and mammals in maintaining a warm body temperature? 17. a. Which of the animals studied in this laboratory exercise have a rib cage? Explain the inmportance of a rib cage to respiration. b. Which of the animals studied in this laboratory exercise have a diaphragm? Explain the importance of a diaphragim to respiration,

Explanation / Answer

1. Deuterostome

2. Dorsal nerve cord

3. Notochord

4. Ray-finned fish

5. Tetrapods

6. Amniotic eggs

7. Metamorphosis

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