GnRH-producing cells in the brains of male cichlids are larger in territorial individuals
a. True
b. False
ANSWER: True
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Which of these processes are occurring during
capillary exchange?
a. high pressure forces b. diffusion c. osmosis d. leakage e. all of these are occurring during capillary exchange
Bubonic plague is transmitted by ________.
A. fomites B. rats C. fleas D. sexual contact E. mosquitoes
Amphibians:a
may exchange gases across their body surfaces. b. all have fairly simple, book lungs. c. all have gills and swim bladders, homologous to those found in fishes. d. are characterized by having parabronchi across which most of the gas exchange occurs. e. have a large oxygen demand that is met by using a countercurrent gas exchange mechanism
Some aquatic invertebrates, such as lobsters and crabs, have ____, which are filamentous or platelike respiratory organs that increase the surface area available for gas exchange with water.
A. book lungs B. a tracheal system C. gills D. a siphon E. villi