Biology - Biomes of North America Flashcards

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Questions and Answers

According to Model 1, which two biomes have the same amount of rainfall?

  • Taiga and Temperature Deciduous Forest
  • Tundra and Desert (correct)
  • Tundra and Grasslands
  • Desert and Tropical Rainforest

Which biome in Model 1 has the most rainfall?

Tropical rainforest

Which biome has the highest average temperature?

Desert

Which two biomes have nearly the same average temperature?

<p>Tundra and Grasslands</p>
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Name the three different types of forests shown in Model 1.

<p>Coniferous forest/taiga, temperature deciduous forest, tropical rainforest</p>
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What is another name for the coniferous forest?

<p>Taiga</p>
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What characteristic differentiates the tundra and the desert?

<p>The average temperature</p>
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Why might the tundra also be known as the 'frozen desert'?

<p>Because there's very little precipitation and the average temperature is -10</p>
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What characteristic differentiates the grasslands and the temperature deciduous forest?

<p>The average precipitation</p>
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What would be the most likely reason for the grasslands having grasses rather than trees as their dominant plant species?

<p>There is not enough rain to support trees</p>
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Describe the relationship between temperature, rainfall, and the type of forest.

<p>The more rainfall, the bigger the tree, so that creates a rainfall</p>
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What information is represented by the x-axis in Model 2?

<p>Trend in number of species</p>
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What information is represented by the y-axis in Model 2?

<p>Distance from the equator (latitudinal region)</p>
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How might the y-axis information in Model 2 be related to one of the data axes in Model 1?

<p>The distance from the equator depends on the temperature</p>
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Identify each of the six biomes found in North America: Tundra; Taiga; _____; _____; _____; _____

<p>Desert; Grasslands; Temperature Deciduous Forest; Tropical Rainforest</p>
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Which latitudinal region contains the fewest number of species?

<p>Arctic</p>
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List the biome(s) found in this latitudinal region.

<p>Found across northern Alaska, Canada, and Siberia</p>
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Which latitudinal region contains the largest number of species?

<p>Tropical rainforest</p>
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List the biome(s) found in this latitudinal region.

<p>Central and South America, Southeast Asia, Africa, and Australia</p>
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What biome in North America has the highest biodiversity?

<p>Tropical rainforest</p>
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What characteristics of this biome enable it to support such a high level of biodiversity?

<p>Lots of rainfall and plant life</p>
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What biome in North America has the lowest biodiversity?

<p>Tundra</p>
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What characteristics of this biome make it difficult for a high level of biodiversity to develop?

<p>Not much rainfall or plant life, and everything is super cold</p>
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What is the general trend of biodiversity in biomes as the latitude moves from the arctic region towards the equator?

<p>Biodiversity gets greater</p>
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What characteristics of the grasslands biome make it a critical source of food for the U.S. and other countries?

<p>Grain farming and animal farming occur in grasslands</p>
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Flashcards

Rainfall in Tundra and Desert

Both Tundra and Desert biomes receive similar amounts of rainfall, despite their contrasting temperatures.

Highest Rainfall Biome

The Tropical Rainforest biome in North America is characterized by the highest rainfall among all other North American biomes.

Hottest Biome

The Desert biome has the highest average temperature compared to all other biomes.

Coniferous Forest Name

The Coniferous forest is also known by another name, Taiga.

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Types of Forests

There are three main types of forests: Coniferous forest (Taiga), Temperate deciduous forest, and Tropical rainforest.

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Tundra vs. Desert Differentiator

The primary difference between the Tundra and Desert biomes is their average temperature, not rainfall.

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"Frozen Desert"

Tundra is often called the 'frozen desert' because it receives minimal precipitation and has an average temperature of -10°C, similar to how deserts lack water.

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Grasslands vs. Forests

The primary difference between Grasslands and Temperate Deciduous Forests is their average precipitation levels; grasslands receive less rain.

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Why Grasslands have Grasses

Grasslands primarily support grasses rather than trees due to insufficient rainfall, meaning there isn't enough water to sustain larger woody plants.

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Rainfall and Tree Size

Larger trees generally grow in regions that receive more rainfall, indicating a direct relationship between rainfall amounts and the potential size of trees in a forest.

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Model 2 Axes

Model 2 illustrates biome diversity by showing species trends on the x-axis and distance from the equator on the y-axis, linking latitude to temperature.

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Six Main Biomes

The six main biomes are Tundra, Taiga, Desert, Grasslands, Temperate Deciduous Forest, and Tropical Rainforest.

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Lowest Species Diversity Region

The Arctic region exhibits the lowest number of species among all biomes.

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Highest Biodiversity Biome

The Tropical Rainforest biome boasts the highest biodiversity, meaning it contains the greatest variety of species.

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Why Rainforests are Diverse

The Tropical Rainforest supports a wide variety of species due to abundant rainfall and rich plant life, creating numerous habitats and food sources.

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Why Tundra has Low Diversity

The Tundra biome has the lowest biodiversity, primarily due to low rainfall, limited plant life, and extremely cold temperatures, which restrict species survival.

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Biodiversity and Latitude

Biodiversity generally increases as latitude decreases, which means moving from the poles towards the equator typically results in more species.

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Importance of Grasslands

Grasslands are essential for agriculture, particularly grain farming and animal farming, earning them the nickname "bread basket" in the U.S.

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Study Notes

Rainfall and Temperature Patterns in Biomes

  • Tundra and Desert receive the same amount of rainfall.
  • Tropical rainforest has the highest rainfall among North American biomes.
  • Desert has the highest average temperature of all biomes.
  • Tundra and grasslands exhibit similar average temperatures.

Types of Forests

  • Coniferous forest is also known as Taiga.
  • Three forest types include Coniferous forest (Taiga), Temperate deciduous forest, and Tropical rainforest.

Climate Characteristics

  • The primary differentiator between tundra and desert is the average temperature.
  • Tundra is referred to as the "frozen desert" due to minimal precipitation and an average temperature of -10°C.

Grasslands vs. Forests

  • The difference between grasslands and temperate deciduous forests lies in average precipitation levels.
  • Grasslands support grasses over trees due to insufficient rainfall.

Relationship Between Climate and Forest Size

  • Larger trees grow in regions with more rainfall, establishing a connection between temperature, rainfall, and forest size.

Biomes Representation

  • Model 2 uses an x-axis to show trends in the number of species and a y-axis to denote distance from the equator (latitudinal regions).
  • The distance from the equator correlates with temperature variations.

Biomes and Species Diversity

  • Six biomes include Tundra, Taiga, Desert, Grasslands, Temperate deciduous forest, and Tropical rainforest.
  • The Arctic region displays the fewest species, while the Tropical rainforest boasts the highest biodiversity.

Biodiversity in Biomes

  • Tropical rainforest supports diverse species due to ample rainfall and rich plant life.
  • Tundra has the lowest biodiversity, hampered by low rainfall, limited plant life, and extreme cold.
  • Biodiversity tends to increase as latitude decreases, moving from the Arctic towards the equator.

Importance of Grasslands

  • Grasslands serve as the "bread basket" for agriculture (grain farming) and animal farming in the U.S.
  • Climate change may result in decreased rainfall and increased temperatures in grasslands, impacting food production capacities.

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