Question 1

Which of the following best explains why tropical rain forest soils are typically nutrient-poor despite high plant diversity?

Accepted Answer

Heavy rainfall leads to leaching and rapid decomposition, causing nutrients to be tied up in living tissues rather than in the soil.

Question 2

A biome is located between 30° and 55° latitude, experiences periodic droughts, and has deep, fertile soils. Which biome is this most likely to be?

Accepted Answer

Temperate Grassland

Question 3

Which adaptation is most commonly found in desert plants to minimize water loss?

Accepted Answer

Dense cover of plant hairs and small leaves

Question 4

Given the following climate data for a region: annual precipitation $$= 2500\ \mathrm{mm}$$, little temperature variation, and most rainfall evenly distributed throughout the year. Which biome does this data most likely represent?

Accepted Answer

Tropical Rain Forest

Question 5

Which soil property is most characteristic of Mediterranean woodland and shrubland biomes?

Accepted Answer

Fragile soils with moderate fertility

Question 6

A scientist is studying a biome with the following features: dominated by evergreen conifers, low soil fertility, thin and acidic soils, and long, cold winters. Which biome is being studied?

Accepted Answer

Boreal Forest

Question 7

Which human activity has most significantly altered temperate grassland biomes?

Accepted Answer

Conversion to agricultural land, resulting in loss of organic matter

Question 8

Why do deserts often have 'islands of fertility' under shrubs?

Accepted Answer

Shrubs trap wind-blown dust and organic matter, increasing soil nutrients locally.

Question 9

Which biome is most likely to experience fire as a regular ecological disturbance, and has plants adapted to resist fire?

Accepted Answer

Mediterranean Woodland & Shrubland

Question 10

A region is located at approximately 10° latitude north of the equator, has stable temperatures year-round, and supports high tree diversity. Which biome is this?

Accepted Answer

Tropical Rain Forest

Question 11

Which of the following is a major reason for the spread of deserts due to human activity?

Accepted Answer

Overgrazing and unsustainable land use practices

Question 12

Which biome is most likely to be found in the rain shadow of a mountain range?

Accepted Answer

Desert

Question 13

If a region has moderate precipitation, low soil fertility, and is dominated by evergreen conifers, what is the most likely explanation for the low fertility?

Accepted Answer

Low temperature and low pH slow decomposition rates

Question 14

Which biome is most likely to have soils classified as lithosols?

Accepted Answer

Desert

Question 15

A climate diagram shows a region with precipitation $$P$$ always less than evaporation $$E$$ ($$P \u003c E) $$throughout the year. Which biome does this most likely represent?

Accepted Answer

Desert

Question 16

Which biome is most likely to be cleared for agriculture and urban development due to its moderate fertility and climate?

Accepted Answer

Mediterranean Woodland & Shrubland

Question 17

Which of the following best describes the vegetation in temperate grasslands?

Accepted Answer

Dominated by herbaceous vegetation with high diversity

Question 18

Which biome is most likely to have a high animal density despite low soil fertility?

Accepted Answer

Boreal Forest

Question 19

Which of the following is a key role of mycorrhizae in tropical rain forest soils?

Accepted Answer

Helping plants acquire nutrients from nutrient-poor soils

Question 20

A region has cool, moist winters and hot, dry summers. The vegetation is dominated by evergreen shrubs and trees adapted to fire. Which biome is this?

Accepted Answer

Mediterranean Woodland & Shrubland

Terrestrial Biomes: Climate, Soil, Vegetation, and Human Influence

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