Full SAT Biology Practice Test 2: Biology-E Test

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Question 20 questions

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1. Which describes a common difference between terrestrial and aquatic ecosystems?

A. Organisms in terrestrial ecosystems are dependent on oxygen, while those in aquatic ecosystems are not.
B. Nutrients are a limiting factor for populations in aquatic ecosystems but not for terrestrial populations.
C. Producers make up the greatest amount of biomass in terrestrial ecosystems, while in aquatic ecosystems they do not.
D. Sunlight is a limiting factor for populations in terrestrial ecosystems but not for populations in aquatic ecosystems.
E. Energy in aquatic ecosystem is transferred from lower to higher trophic levels, but it moves in the opposite direction in aquatic ecosystems.

2. Which of the following are documented effects of increasing average global temperature on fish populations?

I. Movement from saline to fresh waters

II. Movement to deeper waters

III. Movement to higher latitudes

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

3. Which of the following remove nitrogen from the atmosphere?

I. Denitrifying bacteria

II. Industrial fertilizer production

III. Lightning

IV. Nitrogen-fixing bacteria

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

4. At which time point in the graph below does the size of the population reach the carrying capacity for the ecosystem?

A. 3
B. 4
C. 6
D. 9
E. 12

5. An invasive species is likely to encounter fewer of which of the following in its new ecosystem?

I. Ecological niches

II. Predators

III. Suitable food sources

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

6. Semelparous species produce a large number of offspring once in their life spans. Iteroparous species produce a small number of offspring repeatedly throughout their lives. Which ecological condition will most likely select for a semelparous strategy?

A. A surplus of nutrients or food sources
B. A lack of competition from other species
C. The availability of multiple ecological niches
D. Persistent limiting factors in the environment
E. A lack of consistency of environmental conditions

7. The first terrestrial forests depended on the evolution of which plant structure?

A. Flowers
B. Naked seeds
C. Covered seeds
D. Vascular tissue
E. Deciduous leaves

8. The field of ecology that studies how species are distributed over the Earth is called

A. ethology
B. paleontology
C. biogeography
D. community ecology
E. conservation ecology

9. Which of the following is a biotic factor that limits the growth of a population in aquatic ecosystems?

A. Depth
B. Competition
C. Light penetration
D. Nutrient availability
E. Dissolved oxygen level

10. How does the concept of inclusive fitness explain altruistic behavior in animals?

A. Altruism is the result of learning and occurs in most social species.
B. Altruism results in the production of a greater number of offspring.
C. Altruism lowers stress in altruistic individuals, which increases fitness.
D. Altruism results in other individuals performing altruistic acts in return.
E. Altruism increases the number of young of genetically similar individuals.

11. The diagrams show three dispersion patterns. Which species characteristic results in pattern 2?

A. Sociability
B. Territoriality
C. Random distribution
D. r-selection
E. K-selection

12. Which type of population growth is represented by the graph below?

A. No growth
B. Slow growth
C. Slow decrease
D. Rapid increase
E. Rapid decrease

13. Which of the following is positively associated with biodiversity?

I. Diversity of ecosystems

II. Genetic variation within species

III. Species diversity within communities

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

14. Some rocks feature red bands or streaks made up of iron oxides, formed when iron reacts with oxygen. These originated from dissolved iron in the oceans, which formed oxides and settled to the ocean bottom. What allowed this chemical and physical process to occur?

A. Early reducing atmosphere of Earth
B. Evolution of cyanobacteria
C. Symbiosis of photosynthetic bacteria and protists
D. Adaptation of plants to terrestrial environments
E. Metabolic activity of the first heterotrophs

15. Which statement BEST describes the Allee effect?

A. Population growth increases as population density increases, below a certain density.
B. Population growth increases as population density increases, above a certain density.
C. Population growth decreases as population density increases, above a certain density.
D. Population growth increases as population density increases, causing density to then decrease.
E. Population growth decreases as population density increases, causing density to then decrease.

16. Ecologists surveyed the composition of three different forest plots. They measured the frequency of occurrence of 13 different tree species and the basal area of each species. The basal area is calculated by measuring tree circumference at breast height and calculating the area occupied by a particular species in square meters per hectare.

Which is the most common tree species in Plot 3?

A. Red pine
B. Red maple
C. Strobe pine
D. Paper birch
E. Sugar maple

17. Ecologists surveyed the composition of three different forest plots. They measured the frequency of occurrence of 13 different tree species and the basal area of each species. The basal area is calculated by measuring tree circumference at breast height and calculating the area occupied by a particular species in square meters per hectare.

Which two species are most closely related?

A. Red pine and red oak
B. Red oak and red maple
C. Red oak and American elm
D. White spruce and strobe pine
E. Quaking aspen and balsam poplar

18. Ecologists surveyed the composition of three different forest plots. They measured the frequency of occurrence of 13 different tree species and the basal area of each species. The basal area is calculated by measuring tree circumference at breast height and calculating the area occupied by a particular species in square meters per hectare.

The data shows a negative, or inverse, correlation between which two tree species?

A. Strobe pine and paper birch
B. Red maple and sugar maple
C. Paper birch and yellow birch
D. Quaking aspen and paper birch
E. White spruce and American elm

19. The graph on the left shows the average monthly temperature and precipitation in Taiyuan, China. Taiyuan's average annual temperature is 10.3°C, and its average annual precipitation is 381 mm, or 38.1 cm. The graph on the right depicts the classification of biomes according to precipitation and temperature.

In which month does Taiyuan, China, experience the LEAST precipitation?

A. April
B. December
C. February
D. January
E. July

20. The graph on the left shows the average monthly temperature and precipitation in Taiyuan, China. Taiyuan's average annual temperature is 10.3°C, and its average annual precipitation is 381 mm, or 38.1 cm. The graph on the right depicts the classification of biomes according to precipitation and temperature.

According to the graphs, in which type of biome is Taiyuan, China, located?

A. Subtropical desert
B. Tropical rain forest
C. Temperate grassland
D. Temperate rain forest
E. Temperate seasonal forest