BI 173 - Fourth Exam - 2000


MULTIPLE CHOICE.  

 

Place the letter of the choice that best answers the question on the line to the left. Two Points Each.
NOTE: "e" answers are never the correct answer.



_______ 1. A swim bladder is used for
                        a. Respiration                 b. Buoyancy                 c. Excretion
                        d. Skeletal structure                     e. Practical jokes


_______ 2. Which is most likely to have epidermal poison glands?
                        a. Frog             b. Lizard             c. Roundworm             d. Sea cucumber
                                        e. Something you don't want to mess with


_______ 3. Which groups are largely or entirely marine?
                        a. Turbellarians and cephalopods         b. Bony fish and polychaete worms
                        c. Echinoderms and rotifers                  d. Crustaceans and echinoderms
                                                        e. Marine or moron?


_______ 4. Chromatophores would be used in
                        a. Memory                     b. Camouflage                     c. Vision
                        d. Flight                                 e. Confusing students


_______5. Modern winged insects use
                        a. All four wings to fly                             b. A direct muscle system
                        c. An indirect muscle system                   d. All of these
                        e. Credit cards to accumulate frequent flyer points


_______6. Which group is most likely the most widespread?
                        a. Vertebrates                     b. Nematodes                     c. Insects
                        d. Mollusks                                         e. Salespeople


_______7. Which would have no internal body cavities?
                        a. Nematode                     b. Clam                     c. Tapeworm
                        d. Starfish                             e. Well, let's do a cavity search...


_______8. The presence or absence of wings on an insect are a reliable indicator of
                        a. Feeding habits                                         b. Diapause
                        c. Sexual maturity                                        d. Polymorphism
                        e. Shouldn't "flight" have shown up here somewhere...?


_______9. Which are insects?
                        a. Beetles, mites, and moths                     b. Termites, lice, and wasps
                        c. Flies, fleas, and ticks                            d. Fleas, ticks, and lice
                                                e. Now I just feel all crawly...


_______10. A mantle would be involved in the production of
                        a. Waste in an arthropod                             b. A snail's shell
                        c. Waste in an annelid                                  d. A sea urchin's spines
                                          e. Tasteful decoration of a fireplace


_______11. Which would not have antennae?
                        a. House flies                     b. Dust mites                 c. Fiddler crabs
                        d. Millipedes                             e. Cable TV households


_______12. Which would have hydrostatic skeletons?
                        a. Liver fluke and wasp                             b. Squid and sea squirt
                        c. Starfish and slug                                    d. Ascaris and leech
                                                e. Regis and Kathie Lee


_______13. Which would have eyelids?
                        a. Snake                         b. Lizards                         c. Bony fish
                        d. Insects                                             e. Blinky


_______14. Hookworms would
                        a. Be flattened                                      b. Have metameres
                        c. Have only longitudinal muscles          d. Each have a scolex
                                                e. Be preset for good fishing


_______15. Which would produce a relatively sealed egg?
                        a. Crow, turtle, kangaroo
                        b. Crocodile, turkey, platypus
                        c. Lizard, robin, opossum
                        d. Frog, snake, chicken
                        e. A lady seal


_______16. In which groups are most species found in fresh water?
                        a. Cephalopods and echinoderms             b. Crustaceans and nematodes
                        c. Amphibians and cartilage fish                d. Oligochaete worms and rotifers
                                            e. The ones that are fresh and wet


______17. What are chelicerae?
                        a. Type of copulatory structure                     b. Type of limbs
                        c. Type of plankton                                      d. Type of mouthparts
                                                e. Type of chewing gum


_______18. Which would be considered to possess a closed circulatory system?
                        a. Roundworm and starfish                         b. Earthworm and salamander
                        c. Beetle and shark                                    d. Bird and moth
                        e. Does the closed system require a password to get in?


SHORT ANSWER.  

Pick TEN Questions to answer in the spaces provided.
NOTE: if you answer MORE than ten, only the first ten will be corrected.
Four Points each. Partial credit is possible.


1. What are the two most likely "staging areas" from which animals could preadapt to a terrestrial way of life?

   

 


2. Briefly explain the biological significance of the trochophore larva.





3. Chordates and Echinoderms are the only two major phyla in what group?





4. Give four examples, from different phylum- or class-level subgroups, of filter feeders.



5. What, by definition, makes a host an intermediate host?





6. Give four different types of arachnids -



7. What two sorts of underwater "flying" modes are used by Chondrichthyes?





8. Give two sets of distinct differences between features of -
CHILOPODS DIPLOPODS

9. Answer for Caenorhabditis elegans -

Phylum? Significance?


10. What is a radula?





11. List four different orders (common names okay) of placental mammals.





12. Give two examples, from two completely different phyla, of animals that lack cephalization.




13. What are the two currently-surviving groups of jawless fish?





14. What is an operculum?





15. Name two major subgroups from different phyla that typically go through metamorphosis.




16. Research with acanthocephalans could lead to the development of which sort of product?




17. What sort of animals (group) have parapods, and what are parapods?



LONG ANSWER.  

Select and answer completely any four of the following questions.
NOTE: if you answer more than four, only the first four will be corrected.  
Six Points Each.  Partial credit is possible.


1. For the three major modern subgroups of the mollusks, name the subgroup (technical name) and briefly explain the foot modifications made by that subgroup.





2. For three different flight adaptations in birds, briefly describe the adaptation, then briefly explain how it contributes to a bird's ability to fly.





3. What are six groups, Class level or larger, that are considered terrestrial groups?




4. Give the three sets of differences between the nervous systems of -

ARTHROPODS CHORDATES



5. Contrast with three sets of differences:

CHONDRICHTHYES OSTEICHTHYES



6. For a typical annelid, give three different types of features that -

SHOW METAMERISM DO NOT SHOW METAMERISM



7. What are six characteristic features that, among animals with some size, are pretty much found only in Echinoderms?





8. What are six features of a terrestrial existence that presented significant challenges to animals who were accustomed to an aquatic life?





ANSWER KEY LINK

BONUS QUESTIONS. 

Answer as many or as few as you wish. You can't lose points on the rest of the exam by getting these wrong. Partial credit is possible.

Virtually every species of trematodes spend one part of their life cycle in which type of animal? Three Points.





How do sheep tapeworm larvae increase the chances that the ants they're in will get eaten by sheep (Three Points), and how do they accomplish this? (Three Points)





How was the original version of the caduceus used? Four Points.





Horseshoe crabs were used earlier in the semester as an example of what evolutionary process? Three Points.





Which animal group has a unique subtype of muscle tissue (Three Points), and what subtype is it? (Three Points)





What is the significance of the onychophorans? Four Points





For Three Points each, what sorts of basic "body plans" (more specific than just symmetry types) show up in many different groups? You can describe a type with an animal that's a typical example.





When vertebrates moved from the water onto land, what other groups of organisms were most likely already there? Three Points each.




Scientists used to think that the pterosaurs, the winged lizards of the time of the dinosaurs, couldn't really fly because they lacked what structure? Three Points.

 


  
     

 

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