DIRECTIONS
Read each question and choose the best answer. Then mark the circle next to the letter for the answer you have chosen. 

    Reactions of Planaria to
Different Stimuli in a T Maze
Stimulus Average Number of Times
a Planarian Moved
Toward Away No Response
Plant 18 4 3
Light 2 23 0
Rock 8 8 9
Food 25 0 0
       
1 These data support the hypothesis that a planarian moves away from —
       
   
A plants
B light
C rocks
D food
2 A primary function of a plant root is to —
  
F release carbon dioxide
G absorb water and minerals
H digest organic materials
J produce secondary growth
  
    A food web
       
3 Which population would be most affected if the snakes were removed from this food web?
       
A Grass
B Mouse
C Lizard
D Hawk
  
4 Edward Jenner helped control smallpox by developing the process of —
       
F emigration
G pasteurization
H flagellation
J vaccination
    Texas Bright Lawn Fertilizer
       
5 What percent of this fertilizer has compounds containing potassium (K)?
       
   
A 0.2%
B 4.0%
C 6.0%
D 10.0%
6 All of these characterize most laboratory accidents EXCEPT —
   
F carelessness
G lack of attention
H inappropriate behavior
J reduced risk-taking
7 Which of these graphs shows the most stable population?
   
A a graph C a graph
B a graph D a graph
    a line graph
       
8 The graph shows the population relationship between a protist predator and its prey. If this relationship continues, the prey population will probably be eliminated by —
       
   
F 6h
G 7h
H 8h
J 9h
    a bar graph
       
9 According to these data, what is the average growth rate for this type of brown algae?
       
A 6 cm/day
B 7 cm/day
C 8 cm/day
D 9 cm/day
  
       
Determining Sex in Developing Sea Turtles
Turtle Group Clutch Size Incubation
Temperature
(°C)		 Available
Seawater 
(mL)		 Sand Composition Hatching Results
Male (%) Female (%)
P 100 27 1000 Quartz 0 100
Q 100 27 1000 Feldspar 0 100
R 100 29 1000 Quartz 46 54
S 100 29 1000 Feldspar 43 57
T 100 31 1000 Quartz 54 46
W 100 31 1000 Feldspar 57 43
X 100 33 1000 Quartz 100 0
Y 100 33 1000 Feldspar 100 0
       
10 According to this information, the sex of developing sea turtles is determined by —
       
F clutch size
G incubation temperature
H available seawater
J sand composition
11 Which of these researchers would be most interested in maintaining a healthy deciduous forest?
       
   
A Biochemist
B Sonographer
C Toxicologist
D Ecologist
   a line graph
   
12 The graph shows the relationship between environmental temperature and the pumping rate of an earthworm’s aortic arches. If this trend continues, what will most likely be the earthworm’s pumping rate at an environmental temperature of 12°C?
   
F 7 beats per minute
G 8 beats per minute
H 9 beats per minute
J 10 beats per minute
four nutrition facts labels
   
13 People with heart conditions are often required to limit their salt intake. According to these labels, which food should a person on a low-salt diet choose?
   
 
A Q
B R
C S
D T
14 Which of these experimental setups would be the first step in determining whether earthworms choose a wet environment or a dry environment?
      
F 2 earthworms on a dry towel; 2 earthworms on a dry towel
G 4 earthworms spread across 2 wet towels
H 4 earthworms spread across a dry towel and a wet towel
J 4 earthworms on a wet towel; 0 earthworms on the dry towel
15 Which organelle has the most control over a cell’s functions?
   
 
A Cell membrane
B Ribosomes
C Nucleus
D Vacuole
16 Low availability of which element could be a limiting factor in a plant community?
      
F Nitrogen
G Argon
H Mercury
J Sodium
17 Mitosis is most important for a kitten’s —
      
A vision
B respiration
C growth
D metabolism
  Low Power: single cell fits within one unit of measureHigh Power: single cell is 10 units of measure wide
  
18 The pictures show the fields of view during low and high magnifications. How much greater is the high-power magnification than the low-power magnification?
  
F ×1
G ×5
H ×10
J ×20
19 Which group is most responsible for the recycling of atoms within the environment?
  
A Autotrophs
B Consumers
C Phototrophs
D Decomposers

a hazard rating sign

    
20 According to the hazard rating, this material is very —
    
F corrosive
G caustic
H combustible
J carcinogenic
A sewage pipe discharges into a river into the decomposition zone. As the water flows the zones are named septic sone, Recovery Zone and Clean Zone.
      
21 The diagram shows the range of organisms found within certain sections of a river in an industrial area. Which section of the river most likely has the LOWEST level of dissolved oxygen?
      
A Decomposition zone
B Septic zone
C Recovery zone
D Clean zone
   

a line graph

       
22 The graph shows the results of experiments with two species of duckweed, L. polyrrhiza and L. gibba. Which of these best explains why growth is LESS when the two species are grown together?
       
F They attract more herbivores.
G One grows faster than the other.
H They compete for the same resources.
J One stimulates the growth of the other.

A daisy representing an agiosperm structure

   
23 The picture shows an angiosperm structure. Which of these gymnosperm structures has a similar function?
   
A Pine needle
B Pine root
C Pinecone
D Pine seed
24 The pineal gland produces melatonin during periods of darkness. Which of these events supports the hypothesis that infants begin producing melatonin at about three months of age?
       
F Infants begin to roll over.
G Infants nap for three hours each afternoon.
H Infants grasp at moving objects.
J Infants start sleeping through the night.
25 The colorful petals of a flower benefit a plant by —
   
A absorbing radiant energy
B attracting insect pollinators
C protecting it from predators
D catching windblown pollen
Fruit of the beggar-tick plant. It has spikes on its skin.
    
26 The picture shows the fruit of the plant commonly called the beggar-tick. The spines on the tip of the fruit help in its dispersal by allowing the fruit to be —
    
F blown by the wind
G carried on water
H attached to animals
J eaten by birds

Two test tubes, each with a plant growing through a cork with the plants roots immersed in water. The second tube is inverted.

   
27 Which question is this apparatus most likely designed to answer?
   
A Does atmospheric pressure affect transpiration?
B Does gravity affect the direction of plant growth?
C Does turgor pressure affect the absorption of water?
D Does absorbed light increase the environmental temperature?

   
28 This graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?
   
F The rabbit population obtains energy by consuming young plants.
G The coyote population is influenced by the available number of rabbits.
H The number of rabbits will decrease during summer months.
J The number of coyotes will be greater than the number of rabbits within a ten-year period.

A food pyramid: Wheat 10,000 Kcal, Grasshoppers 1000 Kcal, Mice 100 Kcal, Cat 10 Kcal

    
29 In this food pyramid, how much energy is available as the energy is passed from one trophic level to another?
    
A 1%
B 10%
C 25%
D 50%
30 A chemical spill was thought to be responsible for a large fish kill in a river. Which person would most likely determine whether the fish died from being exposed to the chemicals?
    
F Toxicologist
G Virologist
H Physiologist
J Botanist
31 The human body uses carbohydrates as a —
   
A source of energy
B material for muscle production
C carrier of oxygen
D coenzyme of metabolism
Some Cranium Charcteristics of Selected Early Hominids
Hominid Angle of Jaw
(degrees)		 Volume of
Brain Cavity
(cm3)		 Presence of
Browridge
     A. africanus 125 545 Yes
     A. robustus 116 890 Yes
     H. erectus 111 975 Yes
     H. neanderthalensis 114 1425 Yes

 

32 The chart shows a few characteristics of craniums from selected early hominids. Which of these graphs best shows the relationship between the brain cavities of these craniums?
   
F A line graph showing the relationship between angle of jaw and volume of brain cavity H A bar graph showing the volume of brain cavity for each hominid
G A pie graph showing the percentage of early hominids J A line graph showing the relationship between each hominid and the volume of brain cavity
33 True plants always contain each of these organs EXCEPT —
  
A roots
B stems
C leaves
D flowers
34 Which technology contributed most to the development of the cell theory?
  
F Organic stains
G Compound microscopes
H Heat-resistant glassware
J Adjustable gas burners
35 An inheritable mutation may occur if an organism has a change in its —
  
A appendages
B internal organs
C DNA structure
D ATP production rates
Respiration Rate of a Growing
Yeast Culture
Time
(min)		 Number of Bubbles
per Minute
0 0
1 7
2 10
3 14
4 19
5 24
6 31
7 39
8 48
9 58
10 ??
  
36 The chart shows the results of growing a yeast culture in a 10% fructose solution. The number of bubbles produced each minute was used as an indication of the yeast respiration rate. If all other factors remain constant, after 10 minutes the respiration rate will most likely be —
  
F 61 bubbles per minute
G 64 bubbles per minute
H 69 bubbles per minute
J 78 bubbles per minute
Does the Length of
a Tomato Plant Branch
Affect Productivity?
Branch Length
(cm)		 Number of
Tomatoes
(per branch)
22 1
23 2
24 3
25 5
26 6
27 4
28 3
29 1
    
37 The chart shows the number of tomatoes produced by branches of different lengths. Which graph best represents these data?
    
A a bar graph C a bar graph
B a bar graph D a bar graph
  A test tube contains a strip of filter paper with leaf extract on its tip, which is dipped into a solvent. After 15 minutes, the leaf extract and the solvent produce orange pigment, yellow pigment, green pigment and red pigmnent that stains the filter paper.
  
38 The pictures show the results of the chromatography of a leaf extract. Which statement is best supported by the results of this investigation?
  
F This leaf contains more than five pigments.
G This leaf has more yellow pigment than green pigment.
H This leaf contains at least four different pigments.
J This leaf’s green pigment is less dense than the yellow pigment.
a mushroom
   
39 What is the approximate height of this mushroom?
   
A 45 mm
B 49 mm
C 53 mm
D 57 mm
  
40 Which relationship is represented when a hyena eats a rodent that it has caught?
       
F Scavenger/carrion
G Herbivore/consumer
H Predator/prey
J Host/parasite

a DNA strand

   
41 Which series of bases will complete this strand of DNA?
   
A CCTGAT
B ACTGGC
C GTAGGC
D TCAGGG
Sunflower Blossoms in a Meadow
Day Time Closed Buds
(%)		 Open Blossoms
(%)
1 6:00 A.M. 100 0
12:00 NOON 85 15
6:00 P.M. 70 30
2 6:00 A.M. 55 45
12:00 NOON 40 60
6:00 P.M. 25 ??
  
42 The chart shows the periodic increases in the percent of open sunflower blossoms found in a meadow. If this trend continues, what percent of the sunflowers will have open blossoms by 6:00 P.M. on the second day?
  
F 70%
G 75%
H 85%
J 90%

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