p) 13. The primary function of the pharyngeal slits in early chordates was A. Fe

Question

p) 13. The primary function of the pharyngeal slits in early chordates was A. Feeding B. Respiration C. Mating 5 p) 14. Phun with phish phylogeny. Match species to the appropriate Class. Answers may be used more than once or not at all. Marbled lungfish White-tipped reef shark Inshore hagfish Bluefin tuna Brook lamprey A. Actinopterygi B. Myxini C. Sarcopterygi D. Cephalaspidomorphi E. Chondrichthyes 2 p 15. Members of the Actinopterygli possess umber) semicircular ducts while members o f the Myxini possess (a number) semicircular ducts. 16. Fish that travel down freshwater streams to the ocean in order to breed are called A. Anadromous B. Catadromous C. Parthenogenetic 12 p) 17. What type of scale is typical of sharks? A Placoid B. Ganoid C. Cycloid is pi 18. In the box to the right, sketch a fish with a homocercal tail and label the oral fin, dorsal fin, pelvic fin, and anal fin. 19. What evolutionary phenomenon explains the great diversity of lamander species found in North America? A. B. Allopatric speciation C. Sympatric speciation (2 pt) 20. What is the term for the mating embrace of anuran amphibians? A. Anadromy B. Boondogling C. Amplexus 2p 21. Which part of the anuran brain is responsible for smell? A. Forebrain B. Midbrain C. Hindbrain a po 22. Freaky styley! Match the structure to the taxon. A. Aves B. Amphibia C. Cephalochordata Pygostyle Urostyle Endostyle (2 pt 23. Which Order of amphibians is legless and exhibits internal fertilization? ??24. Give one morphological feature of the heart that reduces the mixing of oxygenated and deoxygenated blood

Explanation / Answer

13. A

14. Marbled lungfish - sarcopterygii

White tipped reef shark - chondrichthyes

Inshore hagfish - myxini

Bluefin tuna - actinopterygii

Brook lamprey - cephalaspidomorphi

15. 3pairs, 1pair

16. B. Catadromous  

17. Placoid

18

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