Biology Quiz on Ecosystems and Energy Flow
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Questions and Answers

Which biome is characterized as a cold desert with no trees?

  • Tundra (correct)
  • Grasslands
  • Boreal
  • Temperate deciduous

The biosphere includes only the atmosphere and hydrosphere.

False (B)

What is the study of how organisms interact with each other and the environment called?

Ecology

In the carbon cycle, the major reservoir of carbon is the ______.

<p>ocean</p> Signup and view all the answers

Match the following biomes with their characteristics:

<p>Grasslands = Produces most of our grains, including wheat Boreal = Produces most of our lumber from coniferous trees Marine = Includes oceans, coral reefs, and coastal areas Freshwater = Encompasses rivers, lakes, and wetlands</p> Signup and view all the answers

Which term refers to the number of different types of species in an area?

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

Sustainability refers to managing resources without exhausting them.

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

The ______ is the layer of gases surrounding Earth.

<p>atmosphere</p> Signup and view all the answers

What is the primary function of nitrogen fixation?

<p>Convert nitrogen gas to ammonia (C)</p> Signup and view all the answers

Producers are organisms that cannot produce their own food.

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

What is the main pigment involved in photosynthesis?

<p>Chlorophyll</p> Signup and view all the answers

In a food chain, primary consumers eat ________.

<p>producers</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Carrying Capacity = Maximum number of individuals an ecosystem can support Symbiosis = Close interactions between different species Predation = One organism eating another for food Limiting Factors = Factors that prevent population increase</p> Signup and view all the answers

Which of the following is NOT a type of symbiotic relationship?

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

In a typical food pyramid, energy is transferred in a 10% efficiency rate from one trophic level to the next.

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

What happens to the remaining 90% of energy not passed on to the next trophic level?

<p>60% is lost as waste and 30% is used for bodily processes.</p> Signup and view all the answers

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Flashcards

Holistic

Considering the whole system and all its interconnected parts.

Stewardship

Taking responsibility for caring for and managing the environment.

Environment

All living and non-living things interacting on Earth.

Sustainable

Using resources without depleting them for future generations.

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Ecosystem

A self-regulating system where living and non-living things interact.

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Biotic

Living organisms in an ecosystem.

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Abiotic

Non-living components of an ecosystem.

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Population

The number of individuals of the same species in an area.

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Nitrogen Fixation

The conversion of atmospheric nitrogen gas (N2) into ammonia (NH3) by certain microorganisms. This process is essential for life, as nitrogen is a key component of proteins and nucleic acids.

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Photosynthesis

The process by which plants use sunlight, carbon dioxide, and water to produce oxygen and glucose (sugar) for energy. This is the foundation of most food chains on Earth.

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Cellular Respiration

The process by which cells break down glucose (sugar) in the presence of oxygen to release energy. This energy is used for various cellular functions.

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Food Chain

A linear sequence of organisms in which each organism feeds on the one below it. Energy flows from producers to consumers.

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Food Web

A complex network of interconnected food chains, showing the flow of energy through an ecosystem involving multiple organisms.

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Trophic Level

A step in a food chain or food web, representing the organisms that feed at a particular level. Each level gets less energy from the one below it.

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Symbiosis

A close and often long-term interaction between two different species. There are different types: Mutualism, Commensalism, and Parasitism.

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Carrying Capacity

The maximum population size that an environment can support without causing damage to the environment or its ability to support future generations.

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