SC 139 - Fourth Exam 1996

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. A hydrostatic skeleton:

_______       a. Shell support in a clam
                    b. Complicated outside covering of a crab
                    c. Chamber with high-pressure fluid in a roundworm
                    d. Extra support feature of a bird
                    e. A very bad way to lead off an exam

2. An animal that spends pretty much all of its time in one spot is called

_______       a. Immobile             b. Parasitic             c. Sessile            d. Attached         e. Boring

3. A tick would be most closely related to

_______       a. Centipede             b. Flea             c. Earthworm            d. Scorpion
                                            e. Any government official

4. Which is within the rules of species names?

_______       a. Itchius hynius             b. Sillius Questionus            c. Idiota Mcdarbia
                    d. flippus overus                                 e. Fred

5. Which animal is more often dangerous in its larval form rather than as an adult?

_______       a. Ascaris             b. Centipedes             c. Leeches            d. Tapeworms
                                    e. Human males - but do they have an adult form?

6. When biologists disagree on the classification of a group of animals, which thing are they allowed to do easily?

                    a. Change the names of the species
                    b. Change the classification level or group designation
_______       c. Change the particular name given to that group
                    d. Not much; once set, groups aren't allowed to change
                    e. Open a theme restaurant and fry those critters up

7. Where should you find a mesoglea?

_______       a. Hydra             b. Starfish             c. Tapeworm            d. Roundworm
                                                e. Between your toes

8. A tracheal system can do the same functions as

_______       a. Brain & intestines             b. Lungs & blood vessels            c. Kidneys & gills
                    d. Kidneys & intestines                    e. Your average sit-com star

9. Which would be echinoderms?

_______       a. Starfish & sponge             b. Hydra & coral            c. Snail & oyster
                    d. Starfish & Sea urchin            e. Couldn't we get by without the foreign languages?

10. Which are both parasites of the intestine?

_______       a. Hookworm & leech             b. Mite & tapeworm            c. Pinworm & filarial worm
                    d. Hookworm & tapeworm            e. Now you've done it - I'm feeling queasy again...

11. Bilateral symmetry usually goes along with what other feature?

_______       a. Tentacles             b. Cephalization             c. Circulatory system
                    d. Compound eyes        e. An unexplained desire to eat Tang right out of the bottle

12. Which are two examples of annelids, segmented worms?

_______       a. Earthworm & roundworm                         b. Marine worm & slime eel
                    c. Earthworm & leech                                  d. Millipede & centipede
                                                    e. Itchy & Scratchy

13. What sort of eye has multiple lenses?

_______       a. Polylens         b. Compound         c. Simple         d. Primitive
                                        e. Expensive if you need contacts

14. The two major subgroups of arthropods are separated because of different

_______       a. Mouthparts             b. Living environments             c. Exoskeletons
                    d. Numbers of legs                 e. Opinions on Curly vs Shemp

15. All animals are

_______        a. Sexual reproducers             b. Made of 3 cell layers            c. Free-living
                    d. Heterotrophic                                e. Basically slimy and icky

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.

1. Put the following alphabetized list in order from smallest to largest:  Class, Family, Genus, Kingdom, Order, Phylum, Species, Subclass, Superfamily.

1.                                         4.                                             7.

2.                                          5.                                             8.

3.                                          6.                                             9.

2. Many insects go through metamorphosis. What advantage do they get from this?

3. What group has a water vascular system and what is it used for?

4. What's the major reason that biologists everywhere use the same classification system?

5. Why is having internal body cavities a big advantage for an animal?

6. What are two features pretty particular to millipedes?

7. Why is a one-way, 2-opening gut an advantageous system?

8. Briefly explain how filter feeding works.

9. Explain what a caduceus is, and what it originally represented.

10. How is a vertebrate basically different from an invertebrate?

11. Name two different groups of social insects.

12. Almost all flukes, including schistosomes, use the same type of animal as an  intermediate host. Two part question:

a) What type of animal?

b) Which phylum group are these a) animals from?

13. What are two of the three cell layers found in more advanced animals?

14. Briefly explain the expression pentaradial symmetry.

15. What advantage is there in evolving segmentation?

16. What are two basic features that set chordates apart from every other group?

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.

1. Cnidarians go through alternations of generations.

a. What does that mean?

b. What body forms are involved, for which basic purpose?

c. What advantages do Cnidarians get from this process?

2. What are the two types of skeletal systems? For each, give two advantages over the other type.

                    _____________________                                 ______________________

3. What are three sets of differences between the two major trunks of animals, based upon embryological development? List below under the proper heading.

                            PROTOSTOMES                                         DEUTEROSTOMES

4. Pick four vertebrate groups and for each, give either an feature that makes them different from the other groups or give two examples of animals from that group.

5. In the drawing to the right, add the proper labels.  Two of the labels can't be added because you can't really see them. Use the alphabetized list below.

Anterior Medial

Distal Posterior

Dorsal Proximal

Lateral Ventral

6. Name the three major groups of the mollusks, and tell how the mollusk foot is used by each group.

7. Give four features of birds that are fairly unique to the group but that also help them to fly, and explain how each feature helps the birds to fly.

BONUS QUESTIONS.

Answer as many as you are able. Wrong answers will not result in points being lost from the main exam.

Tapeworms produce segments but are not technically considered segmented animals.  For Three Points, explain why not.

What odd characteristic do some sponges exhibit that shows them to be only slightly above a colony existence? Three Points.

What's the first aid for stings from a Portuguese man-o-war? Two Points.

What kept octopus and squids out of fresh water environments? Three Points.

What common misconception goes with compound eyes, and why does it make no sense? Three Points.

The book asks you to explain why coelomates have been much more successful than pseudocoelomates. Why is this a silly question? Three Points.

An Ascaris roundworm might wander out either end of you. Why would it do this? Two Points.