1. Whan an insect larvae slowly consumes and eventually kills its host, it is called a(n)

A. hyperparasite

B. phytophagous

C. saprophagous

D. hyperpredaceous

E. parasitoid

E. parasitoid

2. In contrast to roundworm, how do segmented worms elongate or stretch lengthwise?

A. Contracting the longitudinal muscles

B. Contracting circular muscles

C. Forcibly expanding the circular muscles

D. Forcibly expanding longitudal muscles

E. Snapping back to original shape of the hard cuticle

B. Contracting circular muscles

3. The intromittent organ of male cephalopods is the

A. pedipalp, a modified labial palp

B. hectocotylus, a modified arm

C. aedeagus, a modified beak

D. penis, the first structure homologous to the mammalian reproductive structure

E. baculum, a modified piece of internal shell

B. hectocotylus, a modified arm

4. The head region of a tapeworm is called the

A. proglottid

B. cercaria

C. sporocyst

D. scolex

E. hydatid

D. scolex

5. The majority of insects

A. are parasitic

B. feed on plant juices and tissues

C. are carnivorus

D. are omnivorous

E. are detritivores

B. feed on plant juices and tissues

6. The remaining valid use of "medical leeches" is to

A. use them to relieve congestion until veins can grow back in an appendage that has been surgically reattached

B. use them to clean out dead tissue from a wound

C. use them to restore the osmotic concentration of the blood

D. apply them to increase antibody production to an area of the body

E. All correct

A. use them to relieve congestion until veins can grow back in an appendage that has been surgically reattached

8. Examples of holometabolous, hemimetabolis, and ametabolous development would be, respectively

A. a dragonfly, grasshopper, and butterfly

B. a springtail, beetle, and butterfly

C. a wasp, beetle, and butterfly

D. a butterfly, grasshopper, and springtail

E. a grasshopper, springtail, and butterfly

D. a butterfly, grasshopper, and springtail

7. The radula

A. not only rasps off fine food particles but also serves as a conveyor belt to carry food toward the digestive tract

B. replaces worn teeth by secreting new teeth at the posterior end

C. varies in number, pattern, and form of teeth, allowing species to be classified by this trait

D. may be modified to bore through hard materials

E. All the above is correct

E. All the above is correct

9. The large posterior attachment organ of the adult monogenean is a(an)

A. rhabdite

B. pilidium

C. cirrus

D. hydatid

E. opisthaptor

E. opisthaptor

10. How are schistosomes unique, compared to other trematodes?

A. They have separate male and female individuals, and the male is larger

B. At no stage in their life cycle do they leave the body of the host

C. Infections are easy to cure by drugs and surgery

D. They strike the rich and the poor, educate and ignorant, alike.

A. They have separate male and female individuals, and the male is larger

11. Centipedes

A. are herbivorous

B. have poison claws

C. have five pairs of legs

D. use hills for respiration

E. are parthenogenic and always oviparous

B. have poison claws

12. The monogenetic flukes

A. are mostly ectoparasites

B. are mostly found in rabbits

C. require an intermediate and a definitive host

D. A correct

E. None correct

A. are mostly ectoparasites

13. The Polyplacophora

A. have a coiled shell

B. live in the ocean, especially in intertidal areas

C. lack gills

D. lack a radula

E. All correct

B. live in the ocean, especially in intertidal areas

14. Spiders and insects have an excretory system composed of

A. permeable surface cuticle

B. enclosed book lungs

C. flame cells

D. green glands

E. Malpighian tubules

E. Malpighian tubules

15. A robin has difficulty pulling an earthworm from its earthen burrow b/c of small chitinous bristles called

A. parapodia

B. segments

C. annuli

D. metanephridia

E. setae

E. setae

16. The cephalopod nervous system is best described as

A. absent

B. primitive and very little advanced from that of a cnidarian

C. the most advanced among molluscs and w/ large acute eyes and a complex brain

D. more complex than ours

E. None correct

C. the most advanced among molluscs and w/ large acute eyes and a complex brain

17. Reproduction in the earthworm involves

A. asexual budding

B. self-fertilization

C. cross-fertilization b/w two dioecious organisms

D. cross-fertilization b/w two hermaphroditic organisms

E. reproduction by "stem mothers"

D. cross-fertilization b/w two hermaphroditic organisms

18. If the main disease symptom is anemia (low red blood cell count), the most likely nematode parasite is

A. Trichinella

B. Ascaris

C. pinworm

D. elephantiasis

E. hookworm

E. hookworm

19. The polychaetes

A. belong to the smallest and most evolutionarily derived class of annelids

B. are mostly freshwater inhabitants

C. are mostly terrestrial, living in moist soil

D. consist of active predators and sedentary particle feeders

E. cannot tolerate brackish or marine salinity

D. consist of active predators and sedentary particle feeders

20. The nematode Caenorhabditis elegans has allowed scientists to develop "fate maps" tracing cell lines back to cell origins. The trait of nematodes and some other related groups where they have a set number of cell divisions leading to the same number of body cells in an adult is called

A. anisogamy

B. apoptosis

C. cryptobiosis

D. gastrulation

E. eutely

E. eutely

21. The mild nematode infection somewhat common among children in the southern US, and transmitted by ingestion of eggs is

A. Trichinella

B. Ascaris

C. pinworm

D. elephantiasis

E. hookworm

C. pinworm

22. Characteristics typical of annelids are

A. segmentation, open circulation, and metanephridia

B. segmentation, a closed circulatory system, and metanephridia

C. an exoskeleton, metanephridia, and pseudocoelom

D. an exoskeleton, Malpighian tubules, and a pseudocoelom

E. metanephridia, a true coelom, and open circulation

B. segmentation, a closed circulatory system, and metanephridia

23. In the earthworm, the typhlosole

A. is the organ of locomotion

B. increases the absorptive area of the gut

C. grinds the food

D. produces secretions during mating

E. coordinates the contractions of the digestive system

B. increases the absorptive area of the gut

24. In what two roundworm parasite cycles do worms get "coughed up" and swallowed in order to complete their cycle?

A. Ascaris and trichina

B. Ascaris and hookworm

C. Elephantiasis and trichina

D. Hookworm and trichina

B. Ascaris and hookworm

25. Polychaetes crawl by means of leg-like ________ which also serve in respiration.

A. aortic arches

B. metanephridia

C. clitella

D. palps

E. parapodia

E. parapodia

26. The oldest ancestral and most widely-occurring larva in the Crustacea is

A. a juvenile resembling the adult

B. the trochophore

C. the veliger

D. the nauplius

E. a planula

D. the nauplius

27. Torsion

A. twists the visceral organs of a snail through a 90 to 180 rotation

B. is caused by uneven growth of the right and left muscles that attach the shell to the head-foot

C. is unique to the class Gastropoda

D. shifts the anus from posterior to anterior

E. All of the choices are correct

E. All of the choices are correct

28. Which of the following is NOT associated w/ the class Bivalvia

A. a radula

B. filter feeding

C. two part shell

D. the umbo

A. a radula

29. Animals that have three layers of embryonic tissue but have organs in a cavity that is not completely lined with mesoderm are

A. acoelomates

B. eucoelmates

C. pseudocoelomates

D. quasicoelomates

E. coelomates

C. pseudocoelomates

30. Molting and subsequent ecdysis in crustaceans

A. involves production of a new cuticle and shedding of the old one

B. is initiated by a stimulus perceived by the central nervous system

C. involves a molt-inhibiting hormone

D. cues on stimuli such as day length, temp, or humidity

E. All the choices are correct

E. All the choices are correct

31. Trilobites exist today as

A. freshwater dwellers

B. terrestrial crustaceans

C. aquatic insects

D. horseshoe crabs

E. fossils only; they are all extinct

E. fossils only; they are all extinct

32. Crayfishes and their allies possess the most elaborate _________________ in the animal kingdom, w/ 17 distinct but homologous types of appendages.

A. serial analogy

B. serial homology

C. convergent homology

D. divergent homology

B. serial homology

33. If eggs or proglottids of the pork tapeworm are ingested,

A. a hydatid cyst may form

B. nothing will form since we have to contract pork tapeworm from eating undercooked pork

C. cysticercosis may occur w/ resulting blindness or death

D. we may contract more pork tapeworm hanging in our intestines

E. None of the choices are correct

C. cysticercosis may occur w/ resulting blindness or death

34. Arthropods are successful b/c they have

A. a very efficient respiratory system

B. highly developed sensory organs

C. reduced competition through metamorphosis

D. a protective exoskeleton that allows both protection and mobility

E. All of the choices are correct

E. All of the choices are correct

35. A planarian feeds by

A. attaching w/ a sucker and extracting blood

B. scraping and sucking food particles via a midventral proboscis

C. engulfing food particles through an anterior mouth and excreting waste via an anus

D. soaking all nutrients from the environment through its thin epidermal surface

E. sucking nutrients in from the environment through its flame cell system

B. scraping and sucking food particles via a midventral proboscis

36. The class Insecta

A. has more species than any other group of animals

B. is of major medical importance to humans

C. is of major economic importance to humans

D. are critical in ecology that the loss of all insects would cause major disruption in nature

E. All of the choices are correct

E. All of the choices are correct

37. The mites and ticks carry their mouthparts on a little anterior projection called the

A. hypostome

B. rostrum

C. capitulum

D. pedipalp

E. pectin

C. capitulum

38. Animals with three well-defined germ layers and that have one solid mass of tissue rather than tissues and organs nestled inside a body cavity are

A. acoelomate and triploblastic

B. eucoelomate and diploblastic

C. pseudocoelomate and triploblastic

D. quasicoelomate and dipoblastic

E. coelomate and triploblastic

A. acoelomate and triploblastic

39. The ________ larva that emerges from the egg in many molluscs is remarkably similar to that seen in annelids.

A. veliger

B. nauplius

C. trochophore

D. instar

C. trochophore

40. The tegument of parasitic flatworms is _____________; the cells are multinucleated

A. parenchymal

B. syncytial

C. absent

D. rhabditiform

E. vitellaria

B. syncytial

41. Which arachnid, found in North America, produces a neurotoxin that can be fatal to humans?

A. Scorpion

B. Brown recluse spider

C. Black widow spider

D. All arachnids have such a toxin and are dangerous if large enough to bite us

E. No arachnids has a dangerous neurotoxic bite

C. Black widow spider

42. Elephantiasis is an enlargement of legs, arms, scrotum, and other tissues caused by

A. an infection of the human coelom by Ascaris

B. a large number of Trichinella worms encysting in our muscles

C. contracting a disease that usually occurs in elephants

D. microscopic nematodes that reproduce and clog lymph vessels, causing infectiong and limbs to swell.

E. a protozoan that lives in tropical roundworms and which, when ingested by humans, cuses muscles to bloat.

D. microscopic nematodes that reproduce and clog lymph vessels, causing infectiong and limbs to swell.

43. If you are discovered to have an infection of Ascaris worms, your most likely danger is

A. anemia

B. destruction of tissues as it migrates though your body

C. blockage of the intestines

D. starvation from lack of nutrition b/c it is absorbing all your food

E. lymph blockage

C. blockage of the intestines

44. The parasite found in the US where people contracted it up by eating poorly cooked pork, bear meat, ect is

A. Trichinella, the trichina worm

B. Ascaris

C. pinworm

D. elephantiasis

E. hookworm

A. Trichinella, the trichina worm

45. A farmer in a rice paddy in Asia becomes infected w/ the liver fluke by

A. eating infected snails

B. drinking water contaminated with eggs

C. eating infected undercooked or uncooked fish

D. swimming or wading in infected water, where the cercariae enter the skin

E. None correct

C. eating infected undercooked or uncooked fish

46. The genus _____ contains some members that have a toxin strong enough to kill humans

A. Tegelu

B. Cyphom

C. Halioti

D. Conus

E. Neopilina

D. Conus

47. A leech

A. has a clitellum only during the breeding season

B. has a fixed number of segments

C. has both anterior and posterior suckers

D. has a coelomic cavity filled w/ connective tissue

E. All of the choices are correct

E. All of the choices are correct

48. Marine crustaceans that are sessile, secrete calcareous plates and filter-feed are

A. ostracods

B. barnacles

C. copepods

D. decapods

E. isopods

B. barnacles

49. How do you become infected w/  Necator americanus hookworms?

A. you consume contaminated water or food

B. you eat uncooked meat

C. Larvae burrow into your feet

D. mosquitoes inject them into your bloodstream

E. You transfer them from your anal region if you dont wash your hands.

C. Larvae burrow into your feet

50. Gas exchange in the earthworm occurs through the

A. gills

B. metanephridia

C. skin

D. setae

E. typhlosole

C. skin