SC 139 - Third Exam 1999

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. Compared to flagella, cilia on a cell would be
_______              a. Less numerous but physically more complex
                            b. More numerous but physically less complex
                            c. Less likely to be moving the cell
                            d. More likely to be moving the cell
                            e. More likely to draw "silly" puns

                    2. In Cnidarian alternation of generations, what alternates?
_______              a. Cell layers                         b. Sexual polyp & asexual medusa
                            c. Feeding types                    d. Asexual polyp & sexual medusa
                            e. Democrat & Republican

                    3. Stomate function tries to set a balance between
_______              a. CO₂ absorption & O₂ loss             b. H₂ O absorption & O₂ loss
                            c. CO₂ absorption & H₂ O loss         d. O₂ absorption & CO₂ loss
                            e. What I say to you and what you can do about it

                    4. Toxoplasma is a
_______              a. Dangerous jellyfish                         b. Ameba parasite of humans
                            c. Type of deadly algae                      d. Sporozoan parasite of cats
                            e. Horrible, horrible thing to expect a human being to remember

                    5. A collar cell has a function that compares best to a
_______              a. Fish net                 b. Hair comb                 c. Paper towel
                            d. Poison dart                                 e. Shirt top

                    6. Which cell structure can be adapted as tentacles, nets, weight distributors,
                                        or as crawling "feet?"
_______              a. Cilia                             b. Flagella                             c. Pseudopods
                            d. Root hairs                             e. I saw that on an infomercial...

                    7. Cells switch from dividing to growth in a root's
_______              a. Elongation zone                                 b. Meristematic zone
                            c. Photosynthetic zone                           d. Maturation zone
                                                        e. Indecisive zone

                    8. Giardia, the organism that produces beaver fever, is a
_______              a. Cnidarian                     b. Ameba                     c. Flagellate
                            d. Sporozoan                             e. Cute little devil

                    9. The colors of various types of algae can be used to predict the
_______              a. Extent to which they resemble fungi
                            b. Typical depths at which they can be found
                            c. Areas on land where they can be found
                            d. All of these things
                            e. Upcoming hot Hollywood fashions

                    10. The main photosynthesizing layer of a leaf is the
_______              a. Spongy layer                                    b. Epidermis
                            c. Cuticle                                             d. Palisade layer
                                        e. Gooey chocolate frosting layer

                    11. A set of fibrous roots is a characteristic of
_______              a. Fungi             b. Monocots             c. Dicots             d. Gymnosperms
                                    e. Hair that's gone way too long without shampooing

                    12. Serial homology is a term that explains
_______              a. Body cavities                                   b. Leaf structure
                            c. Vascular bundles                             d. Limb structure
                                                        e. Breakfast foods

                    13. Which would have stinging cells?
_______              a. Sponge, coral, algae                         b. Jellyfish, coral, anemone
                            c. Sponge, malaria, hydra                     d. Coral, algae, water mold
                                e. I guess that might be better than stinking cells...

                    14. Two groups that are commonly combined in a shared group are the
_______              a. Amebas & Flagellates                         b. Flagellates & Sponges
                            c. Sporozoans & Slime molds                 d. Algae & Sponges
                                e. People that like this stuff and the certifiably insane

                    15. Which would be a site of secondary growth?
_______              a. Leaf tip                 b. Hydra tentacle                 c. Woody stem
                            d. Herbaceous stem                 e. Local high school

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. A spicule is a _______________ found in a ______________.

2. Why was the evolutionary development of a mesoderm, a middle tissue layer, so important?

3. Travelers to Mexico are warned, "Don't drink the water." What exactly is in the water, and what disease does it cause?

4. Which group that we've studied in this section has the most complex reproduction, and why?

5. a) What is cephalization? b) What other, apparently separate feature is connected to it?

a)

b)

6. Name and briefly describe the two parts of a leaf.

7. What are two different functions in plants that are affected by hormones?

8. What exactly can tree rings tell us about history?

9. Give the basic function:

MICRONUCLEUS:
MACRONUCLEUS:

10. Why are flatworms flat?

11. What are two different forms of natural vegetative propagation?

12. What feature of Trypanosomes allows it to live for years in a person without being removed by their immune system?

13. What does sessile mean?

14. Slime molds are studied for their highly unusual abilities. What are two such abilities?

15. What exactly happened during the Cambrian Explosion?

16. Exactly what is a root cap protecting the root tip from?

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 and give the basic function of the four types of plant tissues:

2. What are four features that are shared by Sponges and Cnidarians but are not just general animal features?

3. What are four general characteristics of animals?

4. Name and briefly describe four ways that water is moved through plants.

5. Several basic features are used as ways to separate groups of animals. These are general features that show up, in one form or another, in almost all groups. What are four such features?

6. For the two major "trunks" of animal evolution:

LINK TO ANSWER KEY

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.

When an agricultural researcher develops seedless fruit, how does the researcher produce seedless fruit plants without seeds? Three Points.

Twenty years ago, someone pounded a nail into a tree five feet from the ground, with two inches of nail showing. The tree's still alive, the nail is still there. But where, approximately? Four Points.

How can you catch PAM, and what can be done about it? Three Points each.

In what two types of human body cells do malaria parasites reproduce? Three Points each.

In what way may sponges be ecologically valuable? Three Points.

What three distinctly different causes of death (human) might be blamed on Cnidarians? Two Points each.

What "impossible" ability was shown by flatworms in the infamous McDarby training experiment? Four Points.

In sea anemone clone colonies, stronger fighters don't overcome weaker fighters in the wild. What possible reasons may explain this? Three Points each.