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BI 101 – Exam #1 – Fall 2009
1. Ecology is best described as the study of
A. classifying organisms taxonomically.
B. organisms in Domains Archaea and
Eukaryota.
C. the ethical treatment of animals.
D. interrelationships between organisms
and their environment.
E. human impacts on the environment and
one other.
2. Perception is best described as the
process of
A. interpreting sensory information.
B. creating observable phenomena.
C. creating repetitive patterns in nature.
D. using skills, not foundational
knowledge.
E. studying the diversity of organisms.
3. Which of the following is a characteristic
necessary to be considered an organism
(alive)?
A. Can produce energy-rich sugars from
sunlight energy.
B. Can reproduce.
C. Is sessile.
D. Consists of more than one cell
(multicellular).
E. Has eukaryotic cells.
4. Carl Linnaeus developed a system of
classification that included scientific names.
Leopards have the scientific name
Panthera pardus. Panthera is the leopard’s
_____ name.
A. Family
B. Class
C. Genus
D. Order
E. Phylum
5. Domain Eukaryota contains organisms in
Kingdoms
A. Archaea, Protista, and Bacteria
B. Plantae, Animalia, Fungi, and Protista
C. Archaea and Bacteria
D. Plantae, Animalia, and Archaea
E. Animalia, Bacteria, and Plantae
6. Which of the following is an example of a
spore-forming vascular plant?
A. Lichen
B. Algae
C. Fern
D. Moss
E. Apple Tree
7. Which structure is correctly matched with
its corresponding function?
A. Trichomes - Swollen taproots of plants
where starch is stored.
B. Stomata (Stomates) - vessels that carry
sugars to plant roots.
C. Sepals - Openings in leaves through
which gases are exchanged.
D. Flowers - Plant reproduction.
E. Root Hairs - Portions of plants that
produce spores.
8. What is the name of the “male” part of a
flower that includes the anther, which
produces the pollen grains?
A. Stigma
B. Sepal
C. Stamen
D. Style
E. Ovule
9. From recitation and the textbook, which
pollinator is correctly matched with the
flower type that it is commonly attracted to?
A. Bee – red, tubular, hanging flowers
B. Night-feeding moth – pale or light green
flowers with heavy fragrance
C. Fly – blue and purple tubular flowers
D. Hummingbird – bright white saucershaped flowers
E. Bat – red, orange, and yellow
composite flowers.
10. Which of the following plants primarily uses
wind to disperse its seeds?
A. Burdock
B. Apple
C. Lupine
D. Oak
E. Fireweed
Use the following image to answer question
11.
11. In the above image of an opened bean
seed, the large kidney-shaped, fleshy area
at the tip of the arrow is a(n)
A. cotyledon.
B. root.
C. embryonic leaf.
D. hilum.
E. pollen grain.
Use the following chart and pictures to answer
question 12.
Drupe
Pome
Berry
Hesperidium
Pepo
Thin outer skin, center of fruit has a
single large stone or pit.
Thin outer skin, center of fruit has a
papery barrier that surrounds several
seeds.
Thin outer skin, center of fruit lacks a
papery barrier and is soft.
Firm or leathery outer skin, inside of
fruit is divided into segments.
Firm or leathery outer skin, inside of
fruit is not divided into segments.
13. From the textbook, which of the following
correctly characterizes wildflowers on the
floor of a deciduous forest?
A. Most do not bloom until the forest
canopy closes in early summer.
B. Most bloom when the leaves drop off
the trees in the early fall.
C. Flowers are often not specialized for
particular pollinators.
D. Predominant colors of the flowers are
orange and yellow.
E. Few parasites impact these plants, so
the flowers can grow very large in size.
14. From the textbook, what is the advantage
of a “twisting seed” shape that can untwist
when it is lying on the ground and exposed
to rain?
A. Herbivores can not eat these seed
types, even when they are moist.
B. The seed is buried into the ground as it
untwists.
C. Wet untwisted seeds easily attach to
animals, their primary form of dispersal.
D. Twisted seeds have a fleshy fruit that
ripens when wet.
E. Twisted seeds are not typically
attacked by parasites.
Use the following figure to answer question 15.
K
L
M
12. Using the chart above, the apple is an
example of a(n) _____ and the orange is a
example of a(n) _____.
A. drupe; pome
B. drupe; hesperidium
C. berry; drupe
D. pome; hesperidium
E. pepo; pome
15. In the above biomass energy pyramid, the
largest section of the pyramid labeled “M”
most likely represents the
A. Carnivores
B. Scavengers
C. Omnivores
D. Producers
E. Herbivores
16. What is produced from the process of
photosynthesis?
A. CO2 + O2 + heat
B. sugar + heat + light
C. sugar + O2
D. sugar + CO2
E. H2O + CO2 + heat
17. In food webs, decomposers
A. are the only organisms that do not carry
out the process of respiration.
B. primarily break corpses into detritus
which will be consumed by detritivores.
C. break down small organic material into
nutrients that can be recycled back to
producers.
D. convert carbon dioxide molecules into
oxygen and water.
E. convert sugars into energy that can be
recycled back to producers.
18. Which of the following is an example of a
legume?
A. Corn
B. Barley
C. Soybean
D. Millet
E. Sorghum
19. Which of the following is a major source of
biomass energy?
A. Henna
B. Wood
C. Oil
D. Cotton
E. Coal
20. Digoxin (also called digitalis) has been
primarily used to
A. produce linen.
B. treat patients with malaria.
C. dye fabrics.
D. remove excess oxygen from the
atmosphere.
E. treat patients with heart disease,
particularly irregular heartbeats.
Use the following picture to answer question
21.
21. The arrow in the above photo is pointing to
the _____ layer of wood that consists of
xylem cells that transport water and
minerals from the roots to the leaves.
A. Sapwood
B. Wood Ray
C. Latewood
D. Heartwood
E. Cork Cambium
22. The term _____ is often used to describe
gymnosperm tree species (typically
conifers).
A. Earlywood
B. Latewood
C. Hardwood
D. Softwood
E. Serotinous
23. Which of the following is a characteristic of
Ponderosa Pine trees?
A. Thick bark
B. Serotinous cones
C. Leaves are scale-like
D. Leaves are awl-shaped.
E. Needles less than one inch in length
24. Which of the following trees has needle-like
leaves that are not in bundles and are
commonly sharp and stiff to the touch?
A. Fir
B. Spruce
C. Pine
D. Sequoia
E. Cedar
Use the following dichotomous key and picture
to answer question 25.
1A. Leaves in bundles……………..…
2
2A. Leaves many per bundle…….…Atlas Cedar
2B. Leaves five or less per bundle…
3
3A. Leaves 3 per bundle ……….…Ponderosa Pine
3B. Leaves 2 per bundle…………..Lodgepole Pine
1B. Leaves not in bundles …………….
4
4A. Leaves scale-like…………..… Port Orford Cedar
4B. Leaves needle-like ………...... Douglas Fir
25. Using the key provided above, the tree in
the above picture is most likely a(n)
A. Atlas Cedar
B. Ponderosa Pine
C. Lodgepole Pine
D. Port Orford Cedar
E. Douglas Fir
26. The textbook describes that some oak
trees retain their brown dead leaves on
their branches for several months, instead
of dropping off the leaves as soon as they
die. What is the most likely advantage of
retaining the leaves? The dead leaves
A. have guard cells that still function into
the winter.
B. protect the stems from insect parasites.
C. shade the bark from excessive sun
exposure.
D. slowly drop from the tree, gradually
returning nutrients to the soil.
E. reduce competition for space with other
tree species.
27. From the textbook, a large spherical growth
on the trunks of maples, spruce, birch, and
many other trees is called a
A. guard cell.
B. burl.
C. knee.
D. juglone.
E. lignin.
28. Which of the following is an example of an
abiotic factor that may be leading to
declines in frog populations?
A. An increase in predators, including
snakes.
B. An increase in parasites.
C. Loss of the insects frogs eat.
D. Water pollution.
E. A reduction in the mates available to
frogs at reproductive age.
29. Two birds of different species fight for the
same seed. This is an example of
A. predation.
B. detritivory.
C. mutualism.
D. intraspecific competition.
E. interspecific competition.
30. Oak galls typically are an example of
A. predation.
B. detritivory.
C. mutualism.
D. competition.
E. parasitism.
31. Carnivorous plants
A. have modified roots that catch prey.
B. can carry out respiration, but not
photosynthesis.
C. are typically found in habitats with
nutrient-poor soils.
D. are scavengers.
E. are only located in the southern
hemisphere.
32. The part of the biosphere that includes soil
organisms is the
A. atmosphere.
B. hydrosphere.
C. ecosphere.
D. lithosphere.
E. climosphere.
33. Which of the following is an animal-like
microscopic organism classified in
Kingdom Protista?
A. Amoeba
B. Azolla
C. Anabaena
D. Hymenoptera
E. Homoptera
34. How can Escherichia coli (E. coli) benefit
humans? E. coli
A. reduces blood clotting.
B. attacks intestinal parasites, particularly
worms.
C. synthesizes vitamin K2.
D. provides antibodies against parasites.
E. destroys fungi that attack human skin.
35. Which vegetable is correctly matched with
the structure that is primarily consumed?
A. Sweet Potato - stem
B. Cabbage - root
C. Radish - leaf
D. Onion - flower buds
E. Celery - petiole
36. Which of the following plants produces a
seed that was eaten raw, soaked in fluids,
or ground into a meal by the Aztecs?
A. Thyme
B. Chia
C. Sage
D. Basil
E. Kale
37. From the video in lab, what is the most
likely relationship between the goby fish
and the shrimp?
A. Predation
B. Parasitism
C. Commensalism
D. Mutualism
E. Competition
38. Which of the following organisms observed
in lab is prokaryotic?
A. Azolla
B. Cyanobacteria
C. Algae
D. Wasp
E. Oak Tree
39. From the textbook, leaf mines are typically
caused by
A. lenticels.
B. pine resin.
C. insect larva.
D. recessive mutations.
E. loss of chloroplasts.
40. Trichomes are
A. oils that repel parasites.
B. small hair-like structures on leaves.
C. cells that assist plants in regulating the
exchange of gases.
D. openings on stems.
E. flat attachments between leaf blades
and stems.
End of the Exam
You can keep this exam booklet. Exam answers will be
posted at the BI 101 website this evening at 6:50 p.m.:
http://science.oregonstate.edu/bi10x
Class results will be available later this week.