1.
The transport system found in protozoa that moves gases isA) simple diffusion. B) a gastrovascular cavity. C) hemolymph. D) an open circulatory system. 2.
Coelomic fluid is used to transport gases inA) rotifers. B) gastrotrichs. C) nematodes. D) all of the above (a-c). 3.
The annelids, such as the earthworm, have a(n) __________ circulatory system.A) closed B) open C) coelomic D) hemolymph 4.
All of the following are granulocytes exceptA) eosinophils. B) basophils. C) neutrophils. D) monocytes. 5.
Which of the following is not a lymphocyte?A) monocyte B) B cell C) T cell D) platelet 6.
A bony fish has a __________-chambered heart.A) one B) two C) three D) four 7.
A four-chambered heart is first seen inA) bony fishes. B) amphibians. C) reptiles. D) crocodilians. 8.
The pacemaker of a mammalian heart is theA) AV node. B) SA node. C) bundle of His. D) Purkinje fibers. 9.
Most aquatic invertebrates carry out gas exchangeA) by diffusion. B) with lungs. C) by gills. D) with tracheal systems. 10.
Arachnids possessA) trachea. B) book lungs. C) neither a nor b. D) both a and b. 11.
Land snails breathe by way ofA) trachea. B) book lungs. C) pulmonate lungs. D) all of the above (a-c). 12.
Amphibians and some reptiles respire byA) cutaneous body surface exchange. B) external filamentous gills. C) internal lamellar gills. D) all of the above. 13.
The type of respiration that allows an organism to exchange gases simultaneously with both air and water is termedA) cutaneous exchange. B) bimodal breathing. C) gill exchange. D) lung exchange. 14.
Which of the following has the greatest rate of oxygen consumption?A) frogs B) humans C) pulmonates D) birds 15.
Movement of lymph in mammals is accomplished by the action ofA) smooth muscle. B) lymph hearts. C) skeletal muscle. D) loose connective tissue. 16.
Movement of lymph in amphibians and reptiles is accomplished byA) smooth muscle. B) lymph hearts. C) skeletal muscle. D) loose connective tissue. 17.
As evidenced by their complete anatomical separation of the ventricles, which group of reptiles is most closely related to birds?A) snakes B) lizards C) crocodiles D) turtles 18.
Hemoglobin is the most commonly occurring respiratory pigment in molluscs and certain arthropods, as well as most vertebrates.A) True B) False 19.
The undulating movement of a fish helps to move the blood back to the heart.A) True B) False 20.
Most insects breathe via simple diffusion across the plasma membrane.A) True B) False 21.
In the respiratory system, oxygen and carbon dioxide always diffuse from areas of low concentration to areas of high concentration.A) True B) False 22.
As animals became larger and acquired higher metabolic rates, simple diffusion became increasingly inadequate as a means of delivering oxygen to the tissues.A) True B) False 23.
The site of gas exchange within the blood in mammals is the alveolus.A) True B) False 24.
The most common respiratory pigments in animals are hemoglobin, hemocyanin, hemerythrin, and chlorocruorin.A) True B) False 25.
During expiration in a human, the diaphragm relaxes.A) True B) False