SAT II Biology E : Biomes, Habitats, and Niches

Study concepts, example questions & explanations for SAT II Biology E

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Example Questions

Example Question #1 : Biomes, Habitats, And Niches

Which biome is characterized by hot, dry weather with mild, rainy winters, some vegetation, and occasional fires?

Possible Answers:

Temperate grassland

Temperate forest

Savanna

Desert 

Chaparral 

Correct answer:

Chaparral 

Explanation:

The chaparral biome is known for being rather dry and for having these characteristics. They are different than deserts, as deserts do not have a rainy season. While savannas are often warm, they have a longer 6-8 month rainy season.

Example Question #2 : Biomes, Habitats, And Niches

Which of the following is not an abiotic component of an ecosystem?

Possible Answers:

Wind speed

Minerals

Temperature

Molds

Humidity

Correct answer:

Molds

Explanation:

Abiotic factors are non-living and molds are living.

Example Question #3 : Biomes, Habitats, And Niches

An ecosystem includes which of the following?

Possible Answers:

Biomes and populations

Populations only

Biomes, communities, and populations

Communities only

Communities and populations

Correct answer:

Communities and populations

Explanation:

Ecosystems are composed of communities and communities are composed of populations. A biome is a larger unit than an ecosystem, as it includes multiple ecosystems.

Example Question #4 : Biomes, Habitats, And Niches

1. Largest biome in the world

2. Short, wet summers and long, cold winters

3. Flora consists of mostly coniferous trees

The given statements most closely describe which biome?

Possible Answers:

Chaparral

Tundra

Deciduous forest

Taiga

Alpine

Correct answer:

Taiga

Explanation:

The taiga biome is the largest biome in the world and is characterized by short, rainy summers coupled with long, freezing winters. Due to its extremely cold temperatures, the taiga's flora or plant life consists of mostly coniferous trees that can survive on the scarce nutrients available in the cold climate of the biome. In contrast, the tundra is frozen year-round and permafrost prevents any trees from growing. Deciduous forests, as the name suggests, sports mainly deciduous trees as its plant life. The alpine biome consists mostly of the areas right below the snow lines of mountains and is generally dry year-round. The chaparral is a relatively small biome that is characterized as being mostly hot and dry year-round, with mild winters.

Example Question #5 : Biomes, Habitats, And Niches

Which of the following biomes is dominated by grasses and herbaceous plants, with some trees and shrubs, and characterized by seasonal rains, a pronounced dry season, and often large migratory mammals?

Possible Answers:

Desert

Tropical rainforest

Tundra

Savanna

Temperate deciduous forest

Correct answer:

Savanna

Explanation:

The characteristics listed describe a savanna. Deserts can also have pronounced periods of rain and dryness but are not dominated by grasses and not populated by large migratory animals. Tropical rainforests and deciduous forests are dominated by trees and tundras tend to be colder and may not receive much rainfall, but often have moist soil due to low evaporation rates.

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