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Biology Test
1. A biology class is studying the effect of competition between two species of insects, Species A and
Species B. For their experiment, they have placed individuals of Species A and Species B in three
different aquariums. Species A and B eat the same type of food. The experimental design is
summarized in the table attached below.
Which of these would be the best way to setup the fourth aquarium to test the effect of competition
on Species A?
A. Place in it 20 individuals of Species B and provide them with 1 gram of food per day.
B. Place in it 20 individuals of Species A and provide them with 2 grams of food per day.
C. Pace in it 5 individuals of Species A and 5 individuals of Species B, and provide them with 2
grams of food per day.
D. Place in it 10 individuals of Species A and 10 individuals of Species B, and provide them with
1 gram of food per day.
2. Scientists studied a rattlesnake population from 1972 until 2002. No snakes moved into or out of
the population during this time.
Which of these most likely happened between 1992 and 2002?
A. The death rate was equal to the birth rate.
B. The birth rate was greater than the death rate.
C. The birth rate was less than the death rate.
3. Which of these methods should a scientist use to view the site of photosynthesis in a plant cell?
A. Use a microscope to view the chloroplasts
B. Use a magnifying glass to view the chloroplasts
C. Use a magnifying glass to view the mitochondria
4. A scientist wants to measure how much gas is released by a plant to estimate how fast it is
photosynthesizing. Which of the following would be the "best" measurement obtained by the
scientist?
A. milligrams of water
B. grams of carbon dioxide
C. meters of carbon dioxide
D. milliliters of oxygen
5. A student is researching the following three examples of animal relationships:



Worms that live in a sheep's liver feed on the sheep's tissue and products of the sheep's
digestion.
A type of wasp lays its eggs on caterpillars so the wasp larvae can feed on the caterpillar.
Small "cleaning" shrimp eat parasites off the bodies of fish.
The table below shows the classification system that the student uses to classify these
Student's Classification System
Which of these tables accurately classifies the three examples of animal?
6. Scientists have classified the reticulated giraffe and the mountain goat as the most closely related
animals in the table. What two properties best support the classification of the reticulated giraffe
and the mountain goat?
A. the time they are most active and the native range
B. the number of toes and the number of bony horns
C. the number of neck vertebrae and the number of bony horns
7. A scientist wanted to determine the best level of light intensity for photosynthesis in an aquatic
plant. He varied the light intensity and measured the amount of a gas produced by the plant at each
level of light intensity.
Which of these is the dependent variable in this experiment?
A. the amount of oxygen produced
B. the type of plant
C. the amount of carbon dioxide produced
D. the light intensity
8. In a certain group of lab mice black fur is dominant and brown fur is recessive. If two
heterozygous mice mate and produce 16 offspring, how many of the offspring will probably have
brown fur?
A. 4
B. 0
C. 12
D. 8
9. A group of students measured the amount of carbon dioxide produced by a mixture of yeast, sugar,
and water at different temperatures.
What would most likely be the volume of CO2 produced at 25oC?
A. 40 mL
B. 30 mL
C. 37 mL
D. 23 mL
10. For grasshoppers and locusts to be in the same family, they must also be in the same
A. species
B. group
C. genus
D. order
11. According to the graph below, which best describes the relationship between temperature and
carbon dioxide?
A. the temperature has increased since 1980.
B. the concentration of carbon dioxide in the atmosphere has increased at the same steady rate for
the past 100 years.
C. the concentration of carbon dioxide and the temperature were the same in 1940.
D. possibly due to other variables there is not a direct relationship between carbon dioxide and
temperature, but there appears over time as the carbon dioxide increases so does the
temperature
E. from 1900 to 1950 the average global temperature constantly increased.
12. This figure shows the feeding relationships in an Antarctic ecosystem. Which organism(s) removal
from the food web would have the greatest impact on other organisms?
A. Krill
B. Small animals and protists
C. Cod
D. Crab eater seal
13. Pairs of homologous chromosomes line up at the cell's equator in stage
A. D.
B. B.
C. C.
D. A.
14. Taken together, these graphs demonstrate that
A. the rate of photosynthesis is affected by changes in the environment.
B. increases in light intensity cause increases in temperature.
C. as the rate of photosynthesis increases, the temperature eventually decreases.
D. photosynthesis is independent of environmental influences.
15. An analysis of the DNA from these organisms would indicate that
A. they all have the same number of chromosomes.
B. they all have gill pouches.
C. their nucleotide sequences show many similarities.
D. their DNA is identical.
16. Which illustration best describes chordates?
A.
B.
C.
D.
E.
17. Eight students collected data to determine how chewing bubble gum would affect its mass. Based
on the graphical results, what statement best describes conclusion of results?
A. Bubble gum initial masses varied by one gram
B. Chewing caused gum mass to decrease rapidly for the first 120 chews and then begins to level
off as it approaches 300 chews
C. Saliva in mouth caused gum mass to decrease
D. Gum masses increased initially at 20 chews
18. What labeled portion(s) of plant is evidence that it is able to respond to its environment?
A. A
B. D
C. A and D
D. B and C
19. Represented are two organisms that illustrate two types of symmetry living things may have. What
organism would reflect symmetry not represented?
A.
Star Fish
B.
Sea Urchin
C.
Snake
D.
Sponge
20. Based on the beak structure, which bird has seeds and nuts as its primary food source?
A.
B.
C.
D.
E.
21. Which two warblers would be in greater competition for their niche?
A.
Blackburnian warbler and Black-throated green warbler
B.
Bay-breasted warbler and Myrtle warbler
C.
Myrtle warbler and Black-throated green warbler
D.
Cape May warbler and Backburnian warbler
22. Which prokaryote is photosensitive?
A.
Organism A
B.
None listed
C.
Organism B
D.
Organism C
23. Which animal phylum is missing in the phyla genetic tree?
A.
Echinoderms
B.
Roundworms
C.
Flatworms
D.
Arthropods
24. Graph represents island size versus diversity. If trend continues, approximately what would the
area (km2) of an island be if the number of species were to reach 1000?
A.
1000
B.
100,000
C.
1,000,000,000
D.
1,000,000
25. What organelles in cell indicates it is a plant and not an animal cell?
A.
Vacuole & Cell membrane
B.
Cell wall and Chloroplast
C.
Peroxixome & Nucleus
D.
Golgi bodies and Mitochondrian
26. Illustration of sponge propagation represents what kind of reproduction?
A.
Gemmules
B.
Budding
C.
Asexual
D.
Sexual
27. Cell structure is modified in leaves in order to maximize exposure to sunlight. What region of a
leaf does most photosynthesis occur?
A.
Spongy mesophyll
B.
Upper epidermis
C.
Lower epidermis
D.
Palisade
Answer Key
1. B
2. C
3. A
4. D
5. C
6. B
7. A
8. A
9. C
10. D
11. D
12. B
13. D
14. A
15. C
16. E
17. B
18. D
19. D
20. B
21. A
22. C
23. B
24. C
25. B
26. D
27. D