Full SAT Biology Practice Test 1: Biology-E Test

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Question 20 questions

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1. A biome that contains a layer of permanently frozen soil, called permafrost, would be classified as

A. taiga
B. desert
C. tundra
D. savannah
E. temperate deciduous forest

2. All of the following can be considered decomposers EXCEPT

A. fungi
B. bacteria
C. hyenas
D. earthworms
E. dung beetles

3. Which pair of organisms is likely to engage in interspecific resource competition?

A. Hare and rat
B. Rat and beetle
C. Hawk and tree
D. Deer and hare
E. Hawk and hare

4. In a single ecosystem, two similar species can coexist peacefully as long as they do not share the same

A. niche
B. predators
C. mutations
D. ecosystem
E. pheromones

5. Myriophyllum spicatum, or water milfoil, native to Eurasia, is an aggressive, invasive aquatic plant in North America. All of the following are reasons this species is successful as an invasive species EXCEPT

A. milfoil evolved from North American plant species
B. milfoil has few natural predators in a nonnative environment
C. milfoil has few natural competitors among North American plant species
D. milfoil is a hardy plant capable of succeeding in harsher environments
E. milfoil is resistant to many native diseases that are adapted to native plant species

6. An example of a secondary consumer is

A. a fish that feeds on algae
B. a hawk that feeds on a mouse that feeds on an insect
C. a plant that is parasitic to another plant
D. a lion that eats a gazelle that feeds on grass
E. a beetle that feeds on nectar

7. Which of the following is considered a biotic factor capable of influencing a plant species's population growth?

I. Intraspecies competition

II. Predation

III. Nutrient availability

A. I only
B. II only
C. III only
D. I and II
E. II and III

8. A lake filled with algae that are choking out aquatic plants and fish is likely experiencing which process?

A. Succession
B. Eutrophication
C. Denitrification
D. Carbon fixation
E. Acid rain runoff

9. In a tropical food web, 800,000 kJ of energy are produced by autotrophic species. Approximately how much energy will exist at the level of secondary consumers?

A. 80 kJ
B. 800 kJ
C. 8,000 kJ
D. 80,000 kJ
E. 800,000 kJ

10. Nitrogen-fixing bacteria are most likely found in which environment?

A. Stomach of a reptile
B. Lower epidermis of leaves
C. Gills of freshwater fish
D. Large intestine of humans
E. Root systems of plants

11. Plants that inhabit warm, dry environments have evolved which of the following adaptations?

I. Conversion of carbon dioxide to a four-carbon compound

II. Stomata that remain closed throughout the night

III. Photorespiration

A. I only
B. II only
C. I and II
D. II and III
E. I and III

12. A grassy field experiences an increase in growth in an area where phosphorus has been added. However, no such growth occurs in a second area to which nitrogen has been added. Which is a limiting nutrient for this ecosystem?

A. Nitrogen, because addition of this nutrient did not affect plant growth
B. Phosphorus, because addition of this nutrient did not affect plant growth
C. Nitrogen, because addition of this nutrient resulted in increased plant growth
D. Phosphorus, because addition of this nutrient resulted in increased plant growth
E. Both nitrogen and phosphorus, because addition of one nutrient increased plant growth

13. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

How many ecosystem types have a higher rate of evapotranspiration than grassland?

A. 1
B. 2
C. 3
D. 4
E. 5

14. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

How much plant biomass is added to a square meter of temperate forest in one month?

A. 100 g
B. 500 g
C. 1,000 g
D. 1,200 g
E. 1,500 g

15. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

Which factor leads to a higher rate of net primary production?

A. Biodiversity
B. Competition
C. Elevation
D. Latitude
E. Precipitation

16. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

According to the chart, which best describes the relationship between solar energy and net primary production?

A. Solar energy is unrelated to net primary production.
B. Solar energy is positively correlated with net primary production.
C. Solar energy is negatively correlated with net primary production.
D. Solar energy increases net primary production where water is not limited.
E. Solar energy increases net primary production by increasing evapotranspiration.

17. Ecologists measured the evapotranspiration and net primary production of different ecosystem types. Their results are shown in the graph.

The graph shows net primary production. Based on the data, which biome could potentially have a gross primary production rate equivalent to 500 grams per square meter per year?

A. Tropical rain forest
B. Temperate forest
C. Alpine forest
D. Grassland
E. Tundra

18. In a long-running ecological study, the species richness of mosses, shrubs, and trees was calculated for one hectare (10,000 m2) of land every 50 years for 200 years. The data are shown in the table.

YEARMOSSESSHRUBSTREES
18001620
18502174
19001053
195013126
2000172814

What ecological process do the data suggest is occurring?

A. Evolution
B. Succession
C. Destabilization
D. Primary growth
E. Artificial selection

19. In a long-running ecological study, the species richness of mosses, shrubs, and trees was calculated for one hectare (10,000 m2) of land every 50 years for 200 years. The data are shown in the table.

YEARMOSSESSHRUBSTREES
18001620
18502174
19001053
195013126
2000172814

During which time period do the data suggest this area may have experienced a natural disaster?

A. 1750-1800
B. 1800-1850
C. 1850-1900
D. 1900-1950
E. 1950-2000

20. In a long-running ecological study, the species richness of mosses, shrubs, and trees was calculated for one hectare (10,000 m2) of land every 50 years for 200 years. The data are shown in the table.

YEARMOSSESSHRUBSTREES
18001620
18502174
19001053
195013126
2000172814

According to the data, has this community reached a climax?

A. Yes; all densities continue to change.
B. No; there is continual change in species' densities.
C. Yes; moss species are constantly present throughout time.
D. No; moss species are always present in high densities.
E. Yes; in 1800 there are relatively many more tree species found.