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SC 139 - Third Exam 2000
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 common life cycle in Cnidarians includes
_______
a. Mobile, sexual medusa & sessile, asexual polyp
b. Mobile, sexual polyp & sessile, asexual medusa
c. Mobile, asexual medusa & sessile, sexual polyp
d. Mobile, asexual polyp & sessile, sexual medusa
e. Shouldn't it include a check-up for those polyps?
2. A root tip needs the protection of a root cap because it is
_______
a. Likely to be eaten
b. Full of young cells
c. Absorbing water
d. Pushing through the soil
e. Likely to catch its death of cold without a cap
3. Which is caused by a sporozoan?
_______
a. Beaver fever
b. Dysentery
c. Malaria
d. Common cold
e. Wanting to marry a multimillionaire
4. When a ciliate needs to produce a particular protein, it gets a working
copy
of the code from the
_______
a. Nucleus
b. Macronucleus
c. Micronucleus
d. Cilia
e. Internet
5. Serial homology is a term that applies to
_______
a. Embryos
b. Legs
c. Branches
d. Cell cultures
e. Sugar Pops
6. A rhizome is a reproductive structure formed from
a(n)
a. Underground stem
b. Aboveground stem
_______
c. Special sprouting root
d. Dropped leaf
e. Is it really appropriate to be discussing reproductive parts?
7. Which body pattern is linked to cephalization?
_______
a. Hermaphrodites
b. Radial symmetry
c. Sessile
d. Bilateral symmetry
e. It doesn't matter, one shouldn't be focused on body pattern
8. Capillary action depends mostly on which feature of water?
_______
a. Its attraction for surfaces
b. Its attraction between water molecules
c. Its ability to generate osmosis / diffusion pressure
d. Its ability to run downhill
e. Wetness.
9. The brain of an animal begins as
_______
a. Ectoderm
b. Endoderm
c. Mesoderm
d. Neuroderm
e. Untrained as a college student's
10. The ability of organs to move independently is an evolutionary product of
_______
a. Body cavities
b. Embryonic tissue layers
c. Types of symmetry
d. All of these
e. Very careful butchery
11. Most transpiration in a plant would occur in which part?
_______
a. Leaves
b. Internal tissues
c. Roots
d. Stems
e. Depends upon its deodorant use
12. Collar cells are part of a
_______
a. Embryo's outside
b. Sponge's filter
c. Woody stem
d. Cnidarian's defense
e. Farm-grown business suit
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. Animals that are hermaphrodites but not self-fertilizing usually have two other
characteristics connected to this. What are they?
2. In animals, there are two main reasons why alternations of generations appears in a life
cycle. What are they?
3. Fill in the blanks for the basic process of photosynthesis.
____________ + ____________ + ____________ --> ____________ + ____________
material
material
Energy
material
material
4. What are two other features related to the colors of the various algaes?
5. What are two different processes in plants that are controlled by hormones?
6. What remarkable ability was discovered in Trypanosomes?
7. Which leaf vein system typically goes with being a:
8. Name and describe the two basic parts of a leaf.
9. Which root system typically goes with being a:
10. Which two Protozoan groups are linked into one Supergroup?
11. The basic organization of a plant can be divided into two sections that together include
the whole plant. What are the sections?
12. Where are spicules found, and what are their function?
13. Give the basic function and directionality:
14. Why, exactly, does seasonal growth produce tree rings?
15. Some protozoans, like the radiolarians, have very long, thin pseudopods. Why?
16. What are the three parts of a slime mold fruiting body?
LONG ANSWER.
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. Give three sets of differences between:
2. Give three sets of distinct differences between:
| PROTOSTOMES |
DEUTEROSTOMES |
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3. For the four of the major subgroups of Protozoans, give the name of the group (common name
is fine) and the primary method that group uses for movement.
4. For the four types of plant tissues, name the tissue type and give one function or distinct
structure associated with that tissue.
5. For the leaf layers given below, describe the arrangement and/ or types of cells in each
layer, and one function of the layer.
| UPPER
EPIDERMIS |
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| LOWER
EPIDERMIS |
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| SPONGY
LAYER |
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| PALISADE
LAYER |
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6. List four general but different characteristics of animals.
7. List four basic characteristics (but not just general animal characteristics) shared by Sponges
and Cnidarians.
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.
Briefly explain, for Four Points each, how a from a buried germinating seed, a sprouting root
bends downward and a shoot bends upwards.
Twenty years ago, someone pounded a rustproof nail into a tree five feet from the ground, with two
inches of nail showing. The tree's still alive, having grown about 3 inches per year, and the nail is still
in it. But where, approximately? Four Points.
Your book has marine algae classified as protozoans. Give a feature of the algae that
supports this classification. Three Points.
When someone has beaver fever, after a couple of weeks the symptoms go away. Why?
Four Points.
What is the definition of a commensal? (The trichomonads that live in some people's
mouths are commensals.) Four Points.
If local waters are found to contain a lot of diatoms, what mineral must be present in the
water? Three Points.
There is a generally-accepted truth about sponges that would seem to demand their
classification in their own Kingdom. What is it? Four Points.
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