BI 173 - Third Exam - 1997



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 taxonomist might try to separate one group into two on the belief that the
                                        group is
                            a. Polyphyletic                             b. Named improperly
                            c. Monophyletic                           d. Embryologically similar
                            e. Bound to get into trouble if you let them sit together...


_______ 2. In vertebrates, organizing motor commands and balance are done mostly in the
                            a. Peripheral system             b. Medulla             c. Cerebellum
                            d. Spinal cord                             e. Parts that do that stuff


_______ 3. Obelia medusae are built so that any 3 "pie slice" piece is equivalent to any
                                         other.  This makes the animals
                            a. Quadrilateral symmetrical                     b. Dorso-ventrally symmetrical
                            c. Quadriradially symmetrical                   d. Asymmetrical
                                        e. Tasty with a big blob of whipped cream


_______ 4. Dioecious animals have
                            a. Neurosecretory cells                          b. Separate genders
                            c. Primitive nervous systems                   d. Both genders in each individual
                                    e. A very difficult time pronouncing that word


_______5. A Superclass would most likely be formed as
                            a. A combination of newly-connected Classes
                            b. A collection of several Orders
                            c. A division of previously-accepted Phyla
                            d. A huge aggregate of loosely-related families
                            e. A place without exams like this one


_______6. A set of stereotyped or instinctive behaviors may be set off by a small, particular
                                        part of a larger stimulus. That part is called the
                            a. Stimulus segment                             b. Releaser
                            c. Sign stimulus                                    d. Imprint
                            e. You mean like vomiting brings on the promise to never drink again-?


_______7. Which combination of features is most likely to be found in a single species
                                        of Protozoan?
                            a. Pseudopods and cilia
                            b. Cilia and a parasitic lifestyle
                            c. Ability to form cilia or flagella
                            d. Ability to form a pseudopod or a flagellum
                            e. Beauty and a keen fashion sense


_______8. Target cells for tropic hormones might be found in the
                            a. Pituitary gland                             b. Hypothalamus
                            c. Thyroid gland                              d. Spinal cord
                            e. Just look for the cells with the tiny paper umbrellas


_______9. Static equilibrium can be thought of as a sense to detect
                            a. Gravity                             b. Momentum
                            c. Acceleration                     d. Centrifugal force
                            e. Whether your clothes will stick to you or not


_______10. A dog that no longer barks when the neighbors come home has become
                            a. Habituated                             b. Sensitized
                            c. Acclimated                             d. Imprinted
                                                        e. Deaf


_______11. Ovaries and testes would be
                            a. Accessory sex organs                     b. Primary sex organs
                            b. Secondary sex organs                     d. Peristaltic sex organs
                            e. A strange thing to be answering questions about


_______12. Compound eyes are of particular use to animals that are
                            a. Close to the ground                    b. Radially symmetrical
                            c. Small                                         d. Sensitive to magnetism
                                    e. Not as likely to use compound interest


_______13. Among invertebrates, who are the "stars" as far as intelligence in concerned?
                            a. Ant colonies and octopi                 b. Starfish and spiders
                            c. Hydras and squids                         d. Whales and humans
                            e. None o' the critters is smart as us terbaccer-smokin' human beans!


_______14. A polar body would serve to
                            a. Save chromosomes for later use
                            b. Increase the number of sperm available
                            c. Conserve yolk material for the embryo
                            d. All of these
                            e. But who wants a body shaped like a bear?


_______15. Induction is a process that occurs during
                            a. Construction of learned behavior
                            b. Secretion of pituitary hormones
                            c. Self-fertilization
                            d. Development of an embryo
                            e. Military drafts


_______16. Earthworms keep themselves moist with mucus carried up from ducts
                                        connected to glands in the skin. What sort of glands?
                            a. Exocrine                               b. Neurosecretory
                            c. Endocrine                             d. Submandibular
                            e. This would be much easier if "mucus" was one of the choices...


_______17. Pheromones react with the sense of
                            a. Touch                               b. Hearing
                            c. Balance                             d. Smell
                                                e. Propriety


_______18. The human section shown at the right is what sort of cut?
                            a. Transverse / cross
                            b. Frontal
                            c. Sagittal / longitudinal
                            d. Coelomic
                            e. Painful


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 two general types of communicative displays?





2. What are two sets of differences between sperm and egg cells in the same species?
Sperm Egg Cells


3. Under what circumstances are an animal's weapons most likely to be nonlethal?





4. For two of the three basic germ layers, name the layer and give one body system largely derived from that layer.



5. What are two types of sensory perceptions, found in other animals, that pick up information that humans cannot?





6. In alternations of generations, what exactly alternates?





7. Meiosis involves two cellular divisions. Briefly give a very basic overview of what happens during:

Meiosis I:


Meiosis II:



8. The evolution of processing in vertebrate brains is thought to have gone through three major types. They are:


__________________-------->__________________-------->__________________


9. Blood sugar levels are too high. Briefly explain how an endocrine feedback system would get that under control, then shut off. You do not need to name specific hormones or structures - general terms are okay here.





10. What is the technical definition of sexual reproduction?





11. Name two specific forms of reproduction that can produce many offspring all at the same time.





12. What two senses involve chemoreceptors?





13. For cephalization:

Define.


What other trait is intimately but indirectly connected to it?


14. If someone disagrees on a taxonomic group's placing in the overall structure...

They are allowed to:


They are not allowed to:


15. Give an allowable way to name a new species of the Genus Rattus after someone named Nixon - name the species properly.




16. What is ethology?



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. What are three advantages that might be derived from nonsocial behavior?




2. Name the three major subsections of the vertebrate forebrain, and for each give a single major function.







3. Name three general types of hormone action, and for each, include either a definition of its effect, or a specific action example, or a specific hormone or gland that does it.








4. Name and give one distinguishing feature for each of the four Protozoan subgroups.




5. Name the two basic forms of reproduction; for each, give one advantage and one disadvantage.

Name Advantage Disadvantage



6. On the drawing, fill in those terms that apply to anatomical areas. Here are the terms,

alphabetically (two from this list will not apply to this particular drawing):

Anterior, Distal, Dorsal, Lateral, Medial, Posterior, Proximal, Ventral

7. For these two major trunks of animal evolution, give three sets of differences.

PROTOSTOMES DEUTEROSTOMES




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.

What is unusual about the nerve impulses in a nerve net? Two Points.



A person who has lost proprioception at first feels certain that they are paralyzed. Why? Two Points.




Why, most likely, might a fish have a spot at the base of its tail? Two Points.




Why would an animal be capable of communicating in a mode that it and others of its species cannot actually sense? Three Points.





Why would a species name be the genus name twice? Three Points.





Why is beaver fever named after beavers? Two Points.

 

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