SC 139 - Third Exam 2014
Numbers are linked to relevant passages in the book. 


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.  Plants will grow under a red light or a purple light, but

_______   a. Purple is better because it has a shorter wavelength
                b. Purple is better because it has a longer wavelength
                c. Red is better because it has a shorter wavelength
                d. Red is better because it has a longer wavelength
                e. They don't like to, it makes them look fat

            2.  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?

            3.  Collar cells are used for

_______    a. Filter feeding         b. Capturing prey         c. DNA storage        d. Cell replacement
                                                            e. Formal dinner parties

            4.  In nematodes, the hydrostatic skeleton also acts as a kind of

_______    a. Digestive system         b. Protective covering        c. Circulation system         d. Sensory system
                                                            e. Thing a superhero might have

            5.  A free-living species would most likely be found

_______    a. In a plant         b. In an animal        c. Out in the environment         d. In a place with no predators
                                                            e. In a drunken stupor

            6.  Flowers can be found in

_______    a. Angiosperms only             b. All vascular plants            b. Angiosperms & gymnosperms
                d. All land plants                    e. Most cases where feet have been inserted into mouths

            7.  The organism that causes malaria is a(n)

_______    a. Apicomplexan             b. Flagellate            c. Bacterium             d. Fungus
                                    e. Nice, friendly, but misunderstood creature

            8.  Materials move up from the roots through

_______    a. Meristems         b. Xylem         c. Phloem        d. Sori         e. Yearly promotions.

            9.  A tree has one hundred tree rings. The 85th ring out from the middle is unusually wide,
                        which could mean

                a. A warm, wet year about 85 years ago            b. A cold, dry year about 85 years ago
_______    c. A warm, wet year about 15 years ago           d. A cold, dry year about 15 years ago
                                                            e. This tree got engaged a lot

            10. The large, leafy structure that one pictures as a "fern" is actually the

_______    a. Sporophyte         b. Flower         c. Gametophyte        d. Cuticle
                                    e. What, you couldn't just say "leaf"?

            11. The structure of a flower often can tell you the type of pollinator it uses.
                            The relationship comes about through

_______    a. Germination         b. Meristem growth         c. Divergent evolution         d. Coevolution
                                                e. One of the weirder online dating sites

            12. 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?


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.  Name TWO processes that help water move up a closed tube in vascular plants.


2. What are two different larger groups that typically go through alternation of generations?


3.  What does each of these ciliate structures do?


4.  What are two different uses plants have for carotenoids?


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


6.  Cephalization: two questions...
What other
feature "goes"
with it?

7.  The abilities of early pollen probably derived from what two abilities that had "recently" evolved?


8.  Environments where you'll find more gymnosperms than angiosperms -

9.  What does sessile mean?

10. What were two advantages connected with the evolution of a tube digestive system?


11. People who travel to Mexico may get dysentery from what sort of organism that lives in the water? Be fairly specific.

12. What do the parasites do that keeps people from being able to fight off chronic diseases (such as sleeping sickness) caused by trypanosomes?

13.  The glucose sugar that plants make with photosynthesis - what are the two major ways that the plants use that glucose?


14. What are two different uses for chromatophores?

15. What is the main purpose of a fruit?

16. Why are flatworms flat?


Answer any four of the following questions for Eight Points Each.

Note: if you answer more than four, only the first four will be corrected.
You can get partial credit on these answers.
1.  For four different types of nematodes, give the species or common name and then one feature for each that makes them unusual, even compared to other nematodes.





2.  Give four sets of differences -





3.  For each of the three major subgroups of Mollusks, give the group, and then describe the characteristic form that the foot takes in that group.




4.  Plants require nutrients other than those used directly in photosynthesis. Give two different examples of these sorts of nutrients, and for each tell something that the plant uses that nutrient for.



5.  Give four sets of general differences (other than the genders involved) between -




6.  Step-by-step, follow the progress from sperm production to seed production in a typical pine tree. (There may be more or fewer steps than lines here.)

7.  Give three sets of differences between -





Link to Answer Key


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.

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

If a 4-inch non-rusting nail is pounded into a tree with 2 inches showing, four feet above the ground line, what two things should be true about that nail 20 years later? Three Points Each.

Why is Beaver Fever called that? Three Points.

What very unusual thing results when two ciliates have sex? Three Points.

What are the different ways that jellyfish stings can kill people? Two Points Each.

Give an example of how a parasite larva in one animal can maximize its chances of getting into the next host. Three Points.

Explain why it is thought that there are probably more nematode species than species in any other animal phylum. Three Points.

What is creeping eruption? Three Points.

How do cuttlefish communicate? Three Points.




Michael McDarby.

SCI 139

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