Biology 303
Spring 2002 First Examination
Multiple-choice Questions. Please Read Carefully! (50 questions, 2 points each)
1. Pick the one best answer for each question.
2. Try to avoid changing answers on the answer form. If you do change an answer be sure to completely erase
your old answer. If the grading machine detects two marked answers it will mark the question wrong, even if one
of those marks is nearly erased.
3. The answer forms will not be returned to you, but you can keep the question pages. Keep a copy of your
answers on this question form. Space is provided to the left of each question. A key will be posted on the lab door
immediately after the exam.
4. Your GRADE FOR THIS EXAM will be posted by the number written at the bottom of this page. Write it on
the ScanTron next to your name. This same number will be used for future exams including the final exam. Please
keep track of it.
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___ 1. Which group is polyphyletic?
a. ciliates b.sponges c. flagellates d. Apicomplexa
___ 2. Thought likely to be ancestral to the animal kingdom:
a. ciliates b. choanoflagellates c. Rhizopoda d. Foraminifera
___ 3. Kingdom is a higher taxonomic category than genus. Which of the following is highest (among those listed)?
a. superfamily b. tribe c. subclass d. superorder
___ 4. Species names are binomial. Which of the following is a species name written in proper form?
a. Musca domestica b. domestica c. musca domestica d. musca domestica
___ 5. Which grouping in the following diagram is paraphyletic? (Diagram shown with overhead projector.)
___ 6. Which consists entirely of parasitic species?
a. zooflagellates b. ciliates c. Foraminifera d. Apicomplexa
___ 7. Which have a micronucleus and a macronucleus?
a. zooflagellates b. ciliates c. Foraminifera d. Apicomplexa
___ 8. Blood parasite that causes a frequently fatal form of malaria:
a. Volvox b. Trypanosoma c. Trichonympha d. Plasmodium falciparum
___ 9. Which would have an archenteron?
a. gastrula b. blastula c. morula d. zygote
___10. The vertebrate nervous system forms from:
a. ectoderm b. endoderm c. mesoderm d. the archenteron
___11. Characteristic of protostomes:
a. radial cleavage b. indeterminate cleavage c. anus from blastopore
d. schizocoelous coelom formation
___12. Approximately how many different cell types make up a sponge?
a. one b. four c. 24 d. 250
___13. Platyhelminthes are:
a. diploblastic and acoelomate
b. diploblastic and coelomate
c. triploblastic and acoelomate
d. triploblastic and coelomate
e. triploblastic and pseudocoelomate
___14. Always have two suckers, cuticle, and an intermediate host:
a. Nematoda b. Hirudinea c. Cestoda d. Turbellaria e. Trematoda
___15. A miracidium larva would search for this as a host:
a. snail b. fish c. crustacean d. earthworm e. human
___16. Has a fish as an intermediate host:
a. Schistosoma b. Oriental (=Chinese) liver fluke c. Ascaris
d. Guinea worm e. hookworm
___17. In the life cycle of any parasite with more than one necessary host, the parasite
reproduces sexually (produces eggs) in the:
a. primary host b. intermediate host
___18. Both the pork tapeworm and the beef tapeworm live as adults in the human small intestine. How does
the worm get there?
a. person swallows eggs
b. person walks bare footed on soil where larvae occur
c. person swallows larvae encysted in meat that is not thoroughly cooked.
d. person is in contact with fresh water containing larvae of the tapeworm
___19. Have pedipalps:
a. polychaetes b. spiders c. cephalopods d. insects e. centipedes
___20. Rotifers are:
a. suspension feeders b. direct deposit feeders c. raptorial feeders
d. all of the above e. both a and c of the above
___21.The radula is used by mollusks in:
a. eating b. digestion c. excretion d. blood circulation e. reproduction
___22. Torsion is:
a. coiling of the shell in a gastropod mollusk
b. coiling of the shell in a chambered nautilus
c. twisting of the gastropod visceral mass through 180 degrees
d. the kind of locomotion seen in cephalopod mollusks
e. what has happened to the shell in the Polyplacophora
___23. Which is not a cephalopod?
a. squid b. chiton c. chambered nautilus d. octopus
___24. The highest percentage of predatory species would be found in the Class:
a. Cephalopoda b. Bivalvia c. Gastropoda d. Polyplacophora
___25. Have a very thick cuticle:
a. earthworms b. scyphozoans c. turbellarians d. nematodes
___26. Have instars:
a. rotifers b. flukes c. arthropods d. mollusks e. sponges
___27. Animals with parapodia also have:
a. clitellum b. trochophore larva c. ovaries and testes d. pseudocoelom
e. suckers
___28. Within the Phylum Annelida the presence of suckers is a/an:
a. ancestral trait b. derived trait
___29. Within the Phylum Annelida the loss of setae (as in leeches) is a/an:
a. ancestral trait b. derived trait
___30. Which is not true of the gastrovascular cavity:
a. has an important role in digestion of food
b. has an important role in distribution of food to body cells
c. has only one opening (usually called the mouth)
d. is found in sponges, jellyfish, and planarians
___31. Corals and sea anemones belong to the taxonomic class that:
a. lacks a medusa form
b. has both fresh water and marine species
c. includes the deadly stinging sea wasp of Australia
d. is characterized by large polyps and small medusae
___32. Jellyfish are:
a. Anthozoa b. Hydrozoa c. Scyphozoa
___33. Homologous pair:
a. earthworm clitellum and leech clitellum
b. squid eye and fish eye
c. bird wing and butterfly wing
d. grasshopper leg and dog leg
___34. Which is not a coelomate animal?
a. crayfish b. clam c. rotifer d. earthworm e. spider
___35. Annelids and mollusks have for many years been considered closely related phyla
because both have:
a. a coelom b. blood vessels c. a clitellum d. a radula e. trochophore larva
___36. Unique (among living arthropods) to the Subphylum Crustacea:
a. biramous appendages b. gills c. compound eyes d. cephalothorax
___37. Which would not be considered metameric?
a. nematode b. earthworm c. polychaete d. grasshopper
___38. Which is not true of trilobites?
a. body consists of a central lobe and two side lobes
b. two pair of antennae and chewing mouthparts
c. became extinct over 225 million years ago
d. were abundant animals in the oceans
___39. Which never have compound eyes?
a. arachnids b. chelicerates c. crustaceans d. insects
___40. How many species of horseshoe crabs are alive today?
a. one b. several c. hundreds
___41. The largest and most diverse class of mollusks:
a. Bivalvia b. Cephalopoda c. Gastropoda d. Polyplacophora
___42.Which is not a chelicerate?
a. barnacle b. horseshoe crab c. spider d. tick
___43. Nearly all are filter feeders, using greatly enlarged gills to trap fine particles
of food:
a. Bivalvia b. Cephalopoda c. Gastropoda d. Polyplacophora
___44. Which parasite do people normally get by swallowing its eggs?
a. hookworm b. Trichinella (trichinosis) c. guinea worm
d. Ascaris e. Schistosoma
___45. Insect wings are on which thoracic segments (counting from the front)?
a. first and second b. second and third c. first and third
d. third and fourth e. second only
___46. Does not have blood vessels:
a. Ascaris b. squid c. earthworm d. polychaete worm e. grasshopper
___47. Corona and mastax are organs characteristic of:
a. flukes b. leeches c. tapeworms d. rotifers e. arachnids
___48. Which have cnidocytes and nematocysts?
a. sponges b. jellyfish c. flatworms d. nematodes e. mollusks
___49. Which has collar cells (choanocytes)?
a. sponges b. jellyfish c. flatworms d. nematodes e. mollusks
___50. This is the "a" version of the exam. For two free points and to insure your paper is
graded correctly please mark "a" for number 50.