BI 173 - Third 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. Cephalization is linked to
                        a. Segmentation         b. Feedback control         c. Learned behavior
                        d. Bilateral symmetry             e. Cancer (everything is!)


_______ 2. Motor control is processed mostly by the
                        a. Medulla                 b. Neurosecretory cells                 c. Nerve cord
                        d. Cerebellum                             e. The accelerator


_______ 3. Exocrine and endocrine glands differ according to
                        a. Which layer produces secretions                 b. How secretions leave
                        c. The general molecule class of secretions      d. Dermal derivation
                                        e. What, spelling is too "easy" a choice???


_______ 4. The number of offspring a species typically produces can most often be
                                    calculated from
                        a. Parental size                                         b. Offspring survival chances
                        c. Parental lifespan                                   d. No reliable feature
                            e. How easily it can be rendered drunk and/or foolish


_______5. When newspapers discuss the bacterium with the species name e. coli,
                        a. The e, which represents the specific, should be capitalized only
                        b. The e, which represents the genus, should be capitalized only
                        c. Both parts should be capitalized
                        d. It's scientifically acceptable as written
                        e. Everybody holds their stomachs and moans


_______6. The ability of organs to move independently is a product of
                        a. Body cavities                                 b. Advanced nervous control
                        c. Having different muscle types          d. A tube digestive system
                                                e. Very careful butchery


_______7. Ritualized behavior is most commonly
                        a. Linked to releasing factors                             b. Stereotyped
                        c. Linked to second messengers                        d. Internal
                                            e. Done with singing and drums


_______8. Which aspect of learned behavior makes it classically Darwinian?
                        a. Its effect on survival                         b. Its ability to be passed on
                        c. Its effect on reproduction                 d. All of these combined
                                        e. Well, we learned who Darwin was...


_______9. Which would be primarily controlled by hormones?
                        a. Balance                         b. Metabolism                         c. Memory
                        d. Behavior                                 e. Baywatch ratings


_______10. Which is most likely to be the sign stimulus in a male robin's agonistic mating
                                     territorial behavior?
                        a. Song                         b. Red breast                     c. Lack of red breast
                        d. Nearby movement                     e. How many questions is this?


_______11. Currently, animals are classified in the same species based upon their
                        a. Physical resemblance                                 b. Offspring production
                        c. Ancestry                                                    d. Ethology
                                        e. Can I poll the audience on this one?


_______12. A polar body's basic function is
                        a. Addition of chromosomes                 b. Fertilization
                        c. Removal of chromosomes                 d. Determination of body orientation
                                                e. Something cold, right -?


_______13. A researcher noticed that most of a litter of baby mice could be seen to have
                                    their stomachs on the right side rather than the left. He found a
                                    problem with
                        a. An early cleavage stage                             b. The gastrulation location
                        c. A homeogene                                            d. Mesoderm formation
                                                e. Telling his right from his left


_______14. Which is the most likely feature that a monoecious animal would have?
                        a. It would be self-fertilizing                             b. It would be nonsocial
                        c. It would have effective defenses                   d. It would be asexual
                                    e. It would be embarrassed to tell anybody


_______15. The two parts of the pituitary gland form from outgrowths of the brain and the
                                    roof of the mouth, making that gland a product of
                        a. Mesoderm only                                     b. Ectoderm and endoderm
                        c. Endoderm and mesoderm                      d. Ectoderm and mesoderm
                                        e. A typically screwed-up environment


_______16. The potential lethality of an animal's weapons is often an indicator of
                        a. Its survival potential                                 b. Evolution in progress
                        c. Their use in communication                      d. Who they would be used on
                                                    e. Its stand on gun control


_______17. Steroid hormones have cytoplasmic receptors because the hormones are
                        a. Not controlled by feedback                         b. Largely sexual in effect
                        c. Lipid soluble                                                d. Tropic
                                                    e. The best way to look "buff"


_______18. If color vision in humans and lemurs were considered a derived trait, then the
                                    two species
                        a. Would share an ancestor with color vision
                        b. Would have color vision from the earliest embryonic form
                        c. Would not share an ancestor with color vision
                        d. Would see colors exactly the same way
                        e. Would both be resistant to black-and-white films



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 different situations that have led to evolution of alternation of generations in some animal groups?


2. Briefly explain one way in which social behavior can convey a passive defense.





3. Give two different examples of animal behavior that shows imprinting.


4. Define: secondary sexual characteristics.





5. Give two sets of differences between nervous systems in:
VERTEBRATES INVERTEBRATES


6. Define / explain the differences:
PROXIMATE
CAUSATION:

 

 ULTIMATE
CAUSATION:

7. Internal, non-digestive body cavities allowed evolution of what features?





8. What is generally true of animals with obvious, contrasting color markings?





9. What is the basic function of a tropic hormone?





10. What nutritional feature makes protozoans unique among "animals" (using the term in the broad context)?



11. What are two different types of environmental stimuli that humans cannot detect but other animals can? Do not include stimuli that are just a variation in range on a human sense.





12. Put in proper order from largest to smallest: Class, Family, Genus, Kingdom, Order, Phylum, Species, Subfamily, Superorder.
1 2 3
4 5 6
7 8 9

13. Name two different types of asexual reproduction that would produce offspring considerably smaller than the parent.





14. What is the basic function of a protozoan stigma, and what is the primary reason that a protozoan would have one?





15. What is the function of a contractile vacuole?





16. What are two different things that can feedback in a hormone control system?





17. Define parthenogenesis.





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. Give three reliable sets of differences that would allow gender determination in a new, unknown species by identifying producers of:

SPERM EGG CELLS



2. Give three sets of distinct differences between:
PROTOSTOMES DEUTEROSTOMES



3. For three parts of the vertebrate forebrain, name the part and give its basic function(s).




4. For three of the major subgroups of Protozoans, give the name of the group (technical name required for full credit) and the primary mode of locomotion.




5. For three advantages to nonsocial behavior, briefly define an advantage and briefly explain how it is an advantage.



6. Fill in the following anatomical labels on the cow, or structures of the cow: anterior, distal, dorsal, lateral, medial, posterior, proximal, ventral.

This may not ever get put here - picture problems.  But you get the basic idea, and it was just a drawing of a cow.

7. Name six reasonably different types of sensory receptors.


CLICK HERE FOR ANSWER KEY


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.

In discussions of animal intelligence, bees or ants are often mentioned, but how does an assessment of their intelligence differ from the study of, say, vertebrate animals? Four Points.





Explain how many of the effects of marijuana can be linked to the part of the brain it affects the most. Four Points.





Another bee question - what seem to be the two critical features in bee "dancing," and what information does each convey? Eight Points.





The evolution of high intelligence is usually linked to what causative feature? Three Points.





Basic timing of the meiotic divisions of egg cell production varies from species to species. What is the basic consideration of just when to time a division? Four Points.





Why might marine animals use internal fertilization? Three Points.





What evolutionary "shortcut" was provided by metamerism? Four Points.





Why is sex in certain protozoans suicide? Four Points.

 

 

 

 

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