SC 139 - Third Exam 1997

MULTIPLE CHOICE. 

On the line to the left, place the letter of the choice that best answers the question.
Three Points Each. NOTE: "e" answers are never the correct answer.

                     1. Which statement is true?
_______              a. Flower structures evolve to suit pollinators
                            b. Pollinator structures evolve to fit flowers
                            c. Not all flowers use pollinators
                            d. All of these are true
                            e. .....Must....be.....careful....with...."all of the above".....questions....

                    2. A local pond with almost no silica in the water would probably not have
_______              a. Diatoms                     b. Water molds                     c. Euglenoids
                            d. Cnidarians                             e. A future in plastic surgery

                    3. A group with extremely complicated sexual reproduction:
_______              a. Algae                         b. Polyps                         c. Ciliates
                            d. Flagellates             e. Anything I write here will get me in trouble...

                    4. Which of these is mismatched?
_______              a. Anther - produces microsporangia
                            b. Pistil - produces pollen
                            c. Sperm tube - produced by pollen
                            d. Ovary - becomes fruit
                            e. Me - this class

                    5. Trypanosomes have which unusual feature?
_______              a. They are passed by insects
                            b. They should be classified in their own Kingdom
                            c. They change chemical coatings to hide from host antibodies
                            d. All of the above
                            e. Oh no! Not again!

                    6. If a species of animal commonly produces huge numbers of offspring,  
                                            then what else is generally true?
_______              a. It is single-celled
                            b. Survival chances for offspring are low
                            c. It is definitely some sort of parasite
                            d. It will watch over and guard those offspring
                            e. It pays very little income tax

                    7. A stamen would produce
_______              a. Medusae                                             b. Fruiting bodies
                            c. Limbs                                                  d. Pollen
                            e. Isn't that what wives say to their husbands when they go shopping?

                    8. If you cut an Obelia medusa into quarter pie-slices, they would all be
                                            equivalent, meaning the medusa has what sort of symmetry?
_______              a. Quadrilateral                     b. Bilateral                     c. Quadriradial
                            d. Asymmetry                             e. Isn't that some snake-head lady?

                    9. PAM is what sort of disease?
_______              a. Amebas eat your brain                         b. Sponges eat your liver
                            c. Sporozoans infect your blood               d. Food poisoning
                                e. Where you get so slippery that nothing sticks to you

                    10. During the Cambrian Explosion,
_______              a. All modern eukaryote groups appeared
                            b. All modern animal and plant groups appeared
                            c. All modern multicellular groups appeared
                            d. All modern animal groups appeared
                            e. Wow, serious deja vu...

                    11. Which of these is mismatched?
_______              a. Sponges - spicules                         b. Flagellates - macronucleus
                            c. Cnidarians - nematocysts               d. Angiosperms - fruits
                                    e. Slime molds - late night TV salesmen

                    12. Euglenoids
_______              a. Are both plant-like and animal-like                     b. Have cilia
                            c. Coat tree bark                                                   d. Are parasites
                                    e. Must be some sort of horrifying code word

                    13. Cnidarian polyps differ from medusae in that they
_______              a. Reproduce sexually and move
                            b. Reproduce asexually and move
                            c. Reproduce sexually and don't move
                            d. Reproduce asexually and don't move
                            e. You mean being called different names doesn't count?

                    14. Red Tides are caused by
_______              a. Crimson sponges                                             b. Dinoflagellates
                            c. Jellyfish                                                            d. Water molds
                            e. Somebody making another Jaws sequel (Old Jaws - Deadly Dentures)

                    15. Collar cells are used for
_______             a. Filtering water                 b. Capturing prey                 c. DNA storage
                            d. Cell replacement                         e. Formal dinner parties

SHORT ANSWER.  

Answer any eight of the following questions for 4 Points Each.
Note: if you answer more than eight, only the first eight will be corrected.
You can get partial credit on these answers.

1. Flowers are modified from two other basic plant structures. What are they?

2. Trichomonas has two species that live three places on human beings what are two of those places?

3. If a hermaphrodite species cannot breed with itself, then what advantage does it get from being a hermaphrodite?

4. Cephalization: two questions...

What is it?

What other apparently unrelated feature does it naturally go with?

5. What two hosts are involved in the life cycle of Plasmodium vivax, which causes malaria?

6. What feature is used to classify the subgroups of algae?

7. What are two different types of human uses for Sponges?

8. What is the function of a micronucleus?

9. In areas where amebic dysentery is common, why aren't the local people generally sick with the disease?

10. In Protozoans, what is a stigma?

11. What are the two features of Protistans that make them different from the other Kingdoms' organisms?

12. Briefly explain serial homology.

13. Single-celled slime molds can form three other unusual structures. What are two?

14. Which two groups of Protozoans are often combined in a supergroup?

15. Define vertebrate chauvinism.

16. What makes an animal an invertebrate?

LONG ANSWER. 

Answer any three of the following questions for Eight Points Each.
Note: if you answer more than three, only the first three will be corrected.
You can get partial credit on these answers.

1. Name two different types of cell structures used to move with, and give two sets of differences between them.

2. Name the four groups of Protozoans, and for each, give one feature that they would normally have that would not normally be found in any of the other groups.

3. For Alternations of Generations in animals, first define the term then give two reasons why certain animals gain an advantage from it.

4. Give three sets of specific differences by which Monocots can clearly be told from dicots.

5. Although Sponges and Cnidarians are not closely related, they share several traits that are not just general animal traits. Name four.

6. Answer any four of the following questions about beaver fever.

Humans get it from what source?

How does it get into that source?

Where does it live in humans?

How or why does it cause disease symptoms?

What happens if it is left untreated?

BONUS QUESTIONS. 

Answer as many as you are able. Wrong answers will not result in points being lost from the main exam. You can get partial credit on these answers.

All organisms that photosynthesize are not in one single Kingdom. For Two Points each, which Kingdoms contain them?

The book makes a common mistake in a table in the section on algae. What is it? Two Points.

Many fish which are brightly colored in a aquarium are not so when seen in their natural habitat. Why? Three Points.

For One Point each, give the chain of circumstances that must occur for Toxoplasma to cause serious birth defects.

Plants are supposed to have evolved from a particular group of algae. What particular chemical, alike in both groups, is that theory based upon? Two Points.

Many biologists would classify Sponges in their own separate Kingdom. Why? Three Points.

Why would a crab tickle an anemone? Three Points.

In the cartoon about "Enemy Anemone," what word kept being repeated in the panels?  Two Points.