Biomes and Ecosystems Quiz
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Questions and Answers

What distinguishes tropical savanna from dry forests?

  • Dry forests experience more frequent fires than savannas.
  • Savannas have grasses, while dry forests do not. (correct)
  • Dry forests have a longer dry season than savannas.
  • Savannas have a higher water availability than dry forests.
  • Which of the following is NOT a characteristic of Mediterranean shrubland?

  • Characterized by winter rainfall and hot, dry summers.
  • Dominated by deciduous trees, shedding leaves seasonally. (correct)
  • Located at approximately 30-35 degrees latitude.
  • Dominated by evergreen shrubs with small, hard leaves.
  • What is the primary factor limiting the distribution of producers in aquatic ecosystems?

  • Climate
  • Availability of nutrients
  • Presence of predators
  • Depth (correct)
  • Which of the following is NOT a process involved in the hydrologic cycle?

    <p>Sublimation (C)</p> Signup and view all the answers

    Which of the following is a defining characteristic of a temperate grassland?

    <p>A dry continental climate and frequent fires. (C)</p> Signup and view all the answers

    What is the primary difference between northern coniferous forests and boreal forests?

    <p>Northern coniferous forests have a longer growing season than boreal forests. (B)</p> Signup and view all the answers

    Where are polar deserts typically found?

    <p>Below the tundra (D)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a desert ecosystem?

    <p>High levels of precipitation throughout the year. (A)</p> Signup and view all the answers

    Which of the following is a characteristic of both tropical rainforests and tropical dry forests?

    <p>Located near the equator. (A)</p> Signup and view all the answers

    What is the major distinction between temperate grasslands and temperate forests?

    <p>Temperate forests receive more precipitation than temperate grasslands. (B)</p> Signup and view all the answers

    What is the predominant type of vegetation found in the photic zone of an aquatic ecosystem?

    <p>Phytoplankton (D)</p> Signup and view all the answers

    What is the primary source of energy for the hydrologic cycle?

    <p>Solar energy (B)</p> Signup and view all the answers

    What is the primary reason why trees cannot grow in the tundra?

    <p>Too cold and short of a growing season. (A)</p> Signup and view all the answers

    What is the primary reason why coastal rainforests in BC receive significantly more precipitation than interior grasslands?

    <p>Coastal rainforests are influenced by the ocean's moisture. (D)</p> Signup and view all the answers

    What is the most abundant type of water on Earth?

    <p>Saltwater (A)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of aquatic biomes?

    <p>Being primarily terrestrial environments. (D)</p> Signup and view all the answers

    What is the maximum depth of the photic zone?

    <p>150 meters (C)</p> Signup and view all the answers

    What is the name of the area where the continental shelf drops off very rapidly?

    <p>Continental slope (A)</p> Signup and view all the answers

    Why are minerals and nutrients low in the center of the ocean?

    <p>Minerals and nutrients sink to the bottom of the ocean. (B)</p> Signup and view all the answers

    What is the primary reason that kelp forests are found in cold, temperate water?

    <p>Cold water contains higher levels of nutrients that support kelp growth. (C)</p> Signup and view all the answers

    What is the primary characteristic that distinguishes the coastal zone from the oceanic zone?

    <p>The coastal zone has higher levels of nutrients than the oceanic zone. (C)</p> Signup and view all the answers

    What is the main factor that determines the type of biome present in a particular location?

    <p>Climate (C)</p> Signup and view all the answers

    What are the three main structural forms of land plants?

    <p>Trees, shrubs, grasses (A)</p> Signup and view all the answers

    Which of the following is NOT a factor that can influence the development of an ecosystem within a specific climate zone?

    <p>Latitude (C)</p> Signup and view all the answers

    Which of these ecosystems is defined by its cold temperatures and lack of trees?

    <p>Tundra (C)</p> Signup and view all the answers

    What is the relationship between the first trophic level and the biome's structure?

    <p>The first trophic level significantly influences biome structure. (A)</p> Signup and view all the answers

    What does the acronym MAP refer to in the context of climate parameters?

    <p>Mean Annual Precipitation (B)</p> Signup and view all the answers

    What is the key difference between a temperate forest and a tropical rainforest?

    <p>Temperature (A)</p> Signup and view all the answers

    How does the concept of convergent evolution apply to biomes?

    <p>Similar structures can evolve in different continents due to similar environments. (B)</p> Signup and view all the answers

    Flashcards

    Biomes

    Different types of ecosystems identified by climate and dominant producers.

    Trophic level

    A level in an ecosystem defined by how energy and nutrients are passed through.

    Dominant producers

    The main species that produce energy in an ecosystem, like plants.

    Terrestrial biomes

    Land-based ecosystems characterized by climate and vegetation types.

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    Forest description

    Ecosystems dominated by trees, typically over 10 meters tall.

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    Herb definition

    Non-woody plants, including grasses and small plants.

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    Mean Annual Precipitation (MAP)

    The average amount of rainfall a location receives in a year.

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    Role of fire in ecosystems

    Fire influences which type of ecosystems develop in certain climates.

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    Tropical Forests

    Ecosystems near the equator with high rainfall and biodiversity.

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    Rain Forest

    A type of tropical forest with little seasonal variation and evergreen trees.

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    Dry Forest

    Tropical forest with a longer dry season and deciduous trees that shed leaves.

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    Tropical Savanna

    A grassland ecosystem with scattered trees and frequent fires.

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    Deserts

    Arid regions dominated by shrubs and succulents, experiencing extreme temperatures.

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    Mediterranean Shrubland

    Ecosystems with evergreen shrubs, found in specific world regions, characterized by winter rain.

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    Temperate Grassland

    Biomes characterized by dry conditions and seasonal precipitation, often prone to fires.

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    Temperate Forests

    Coastal forests with a mixture of deciduous and evergreen trees, affected by climate.

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    Boreal Forests

    Cold forests dominated by conifers, featuring long winters and short summers.

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    Tundra

    A treeless biome too cold for forests, with permanently frozen soil.

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    Hydrologic Cycle

    The continuous movement of water through evaporation, condensation, precipitation, and runoff.

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    Photic Zone

    The upper layer of the ocean where sunlight penetrates enough for photosynthesis.

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    Aquatic Biomes

    Ecosystems primarily consisting of water, covering 75% of Earth’s surface.

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    Algae

    Unicellular and multicellular organisms that are primary producers in aquatic systems.

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    Endemic Species

    Species that are unique to a specific geographic area, often found in Mediterranean regions.

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    Twilight zone

    The layer below the photic zone with limited light, typically 150-200 meters deep.

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    Continental shelf

    The underwater landmass that extends from a continent, characterized by shallow waters.

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    Kelp forests

    Underwater ecosystems formed by large seaweeds, found in shallow, cold waters.

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    Coral reefs

    Biodiverse underwater ecosystems in shallow, tropical waters, built from coral polyps.

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    Study Notes

    Biomes and Ecosystems

    • Biomes are distinct ecosystems defined by climate and dominant producers.
    • Biome structure is primarily determined by the producers (first trophic level).
    • Convergent structures (similar, but different species) exist across continents in comparable biomes.
    • Key factors influencing biome distribution and structure include: climate (major influence), fire, soil, herbivores, and producers.
    • Terrestrial biomes may span globally, exhibiting similar climate characteristics (latitude, precipitation, temperature) while having different species.

    Terrestrial Biome Types

    • Forests: Ecosystems dominated by trees (10+ meters tall).
    • Shrubs: Woody plants with multiple stems, smaller than trees.
    • Herbs: Non-woody plants (e.g., grasses).
      • Forests develop in areas with adequate precipitation and moisture.

    Climate Parameters

    • Climate is described using Mean Annual Precipitation (MAP) and Mean Annual Temperature (MAT).
    • Different climate zones (e.g., tundra, boreal forest, temperate forest, tropical rainforest, etc.) are associated with specific biomes based on temperature-precipitation relationships.

    Tropical Forests

    • Rainforests: Characterized by little seasonal variation, tall trees, broad-leaved evergreen trees, high rainfall, and equatorial location.
    • Dry forests: Experience longer dry seasons, deciduous trees (shed leaves during dry periods), and have substantial shrubbery and other plants.

    Tropical Savanna

    • Savannahs are grasslands with scattered trees.
    • Savannas are differentiated from dry forests by their dominant grasses.
    • Frequent fires are common in savannas.

    Deserts

    • Deserts are dry ecosystems often formed by descending air masses with high pressure.
    • They are too dry for substantial tree growth.
    • Deserts exhibit a wide temperature range - both hot and cold deserts exist.
    • Deserts are dominated by shrubs, succulents (e.g., Joshua trees), or sparse grasses.

    Mediterranean Shrubland

    • Found at approximately 30-35 degrees latitude in various locations (Southern Africa, Southern Australia, parts of Chile, California, Mediterranean).
    • Characterized by winter rainfall and hot, dry summers.
    • Dominated by evergreen shrubs with small, hard, flammable leaves.
    • Often harbors many endemic (unique to an area) species.

    Temperate Grassland

    • Located in areas approaching 60 degrees latitude.
    • Dry continental climate, frequent fires, and lack of significant moisture are typical traits.
    • Seasonal precipitation patterns are observed.

    Temperate Forests

    • Located in coastal areas at the same latitudes as temperate grasslands.
    • Comprises broad-leaved forests (deciduous or evergreen, including eucalyptus).
    • Deciduous forests result from dry winters, whereas evergreen forests thrive in milder winters.
    • Broad-leaved forests are angiosperms.

    Northern Coniferous Forest

    • Dominated by gymnosperms (needle-leaved trees).
    • Includes sub-categories:
      • North American temperate rainforests
      • Boreal forests, characterized by cold winters, short summers with trees that tolerate long frost periods.
    • Needle-leaved, evergreen trees are common due to cold winters and short growing seasons.

    Tundra

    • Tundra biomes are too cold for tree growth, with short, cool summers and long, cold winters.
    • Dominated by shrubs and grasses, with permanently frozen soil.

    Mountain Biomes

    • Mountain ecosystems exhibit distinct climate zones, with temperatures decreasing with increasing altitude (approximately 6 degrees Celsius for every 1000 meters).
    • Biodiversity varies across different altitude zones.

    Aquatic Biomes

    • Water covers 75% of Earth's surface, largely ocean (71%).
    • Includes a variety of fresh water sources (lakes, rivers, groundwater, ice).
    • Major processes in the water cycle are evaporation, condensation, precipitation, and runoff.
    • Aquatic productivity is controlled by light penetration and nutrient availability.

    Ocean Zones

    • Photic zone: Surface water layer where light penetrates sufficiently for photosynthesis (~150 meters).
    • Twilight zone: Below the photic zone, with limited light penetration.
    • Oceanic zone: Deeper water beyond the continental shelf with lower nutrient availability.

    Coastal Zone

    • The coastal zone over the continental shelf is highly productive due to sunlight penetration and nutrient influx.
    • Kelp forests thrive in cold and temperate coastal waters.
    • Coral reefs exist in shallow tropical waters.

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    Description

    Test your knowledge on biomes and ecosystems with this quiz. Explore the different types of terrestrial biomes, the influence of climate on biome distribution, and the characteristics that define each ecosystem. Perfect for students studying environmental science or ecology.

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