Ecosystems and Food Chains Quiz
50 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is an example of a primary consumer?

  • Rabbit (correct)
  • Shark
  • Fox
  • Eagle

Detritivores are organisms that only feed on living plants.

False (B)

What is the role of decomposers in an ecosystem?

Decomposers break down dead organic matter and extract remaining energy.

The second level in a food chain is occupied by ______.

<p>Secondary consumers</p> Signup and view all the answers

Match the following terms with their correct definitions:

<p>Producers = Organisms that produce energy from sunlight Primary Consumers = First level of consumers in a food chain Trophic Levels = Feeding levels in a food web Food Web = A network of interrelated food chains</p> Signup and view all the answers

What is the primary source of energy for ecosystems?

<p>Energy from the Sun (A)</p> Signup and view all the answers

Energy from the Sun is only necessary during certain seasons for ecosystems to function properly.

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

What process do green plants use to capture sunlight and convert it into chemical energy?

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

Energy in a food chain is passed from species to species when _____ eat plants.

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

Match the following life processes to their descriptions:

<p>Cellular Respiration = Process by which organisms convert glucose into energy Moving = Physical activity performed by organisms Growing = Increase in size or mass of an organism Reproduction = Process by which organisms produce new individuals</p> Signup and view all the answers

What is the term used for the ecological role and space that an organism fills in an ecosystem?

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

Herbivores are animals that eat only other animals.

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

Name one abiotic factor in an ecosystem.

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

Plants and algae are known as __________ because they trap the energy in sunlight and produce their own food.

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

Match the type of consumer with their feeding behavior:

<p>Herbivores = Eat only plants Carnivores = Eat only meat Omnivores = Eat both plants and meat Scavengers = Eat remains of dead animals</p> Signup and view all the answers

What percentage of energy is typically passed from one trophic level to the next?

<p>10% (D)</p> Signup and view all the answers

The Pyramid of Biomass shows an increase in total mass of organisms as one progresses towards the top of the food chain.

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

What is the primary purpose of ecological pyramids?

<p>To describe the energy flow among the trophic levels.</p> Signup and view all the answers

The grass captures ______ kJ of energy from the sun in the energy flow example.

<p>15,000</p> Signup and view all the answers

Match the following ecological pyramids with their descriptions:

<p>Pyramid of Energy Flow = Shows energy availability decreases with each trophic level. Pyramid of Numbers = Illustrates the number of organisms at each trophic level. Pyramid of Biomass = Represents the total mass of organisms at each trophic level. Producers = Organisms that capture energy from the sun.</p> Signup and view all the answers

What trend is observed in the Pyramid of Numbers as you move up the food chain?

<p>The number of organisms decreases (A)</p> Signup and view all the answers

The Pyramid of Biomass shows that the total biomass increases from producers to top consumers.

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

What is the main difference between the Pyramid of Numbers and the Pyramid of Biomass?

<p>The Pyramid of Numbers shows the number of organisms at each trophic level, while the Pyramid of Biomass shows the total biomass at each trophic level.</p> Signup and view all the answers

The total biomass of producers is generally greater than the total biomass of __________.

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

Match the following examples with their corresponding categories in the ecosystem:

<p>Tree = Producer Praying mantis = Consumer Pinecone = Producer Beetle = Consumer</p> Signup and view all the answers

What process do producers use to convert carbon dioxide into glucose?

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

The carbon cycle operates independently from other biogeochemical cycles.

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

Name one type of carbon compound that glucose is converted into by plants.

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

During photosynthesis, plants take in ________ from the atmosphere.

<p>carbon dioxide</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Producers = Organisms that perform photosynthesis Carbon Cycle = Process of carbon moving through an ecosystem Photosynthesis = Conversion of carbon dioxide and water into glucose Biogeochemical Cycles = Processes that recycle nutrients in the environment</p> Signup and view all the answers

What is the primary source of carbon for water plants in aquatic ecosystems?

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

Deforestation decreases the amount of carbon dioxide in the atmosphere.

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

What are two natural sources that can disrupt the carbon cycle?

<p>Forest fires and volcanoes</p> Signup and view all the answers

Burning fossil fuels releases carbon dioxide into the Earth's __________.

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

Match the following carbon pools with their characteristics:

<p>Ocean = Holds dissolved COâ‚‚ Air = Contains 0.03% COâ‚‚ Biosphere = Contains living organisms Fossil Fuels = Burned for energy production</p> Signup and view all the answers

Which process involves organisms converting carbon compounds into energy?

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

Which of the following processes is primarily responsible for converting nitrogen gas into ammonia?

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

Only producers carry out cellular respiration.

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

What is released back into the atmosphere by decomposers?

<p>carbon dioxide</p> Signup and view all the answers

Plants and phytoplankton solely produce oxygen through photosynthesis without any assistance from bacteria.

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

During photosynthesis, plants convert ______ and water into glucose and oxygen.

<p>carbon dioxide</p> Signup and view all the answers

What is the chemical formula for oxygen gas?

<p>O2</p> Signup and view all the answers

The process of converting nitrogen gas into ammonia is called __________.

<p>nitrogen fixation</p> Signup and view all the answers

Match the following stages of the carbon cycle with their descriptions:

<p>Producers = Conduct photosynthesis Primary Consumers = Eat plants Secondary Consumers = Eat herbivores Decomposers = Break down dead matter</p> Signup and view all the answers

Match the following processes with their descriptions:

<p>Photosynthesis = Process where plants convert carbon dioxide and water into glucose and oxygen Cellular respiration = Process that consumes oxygen and releases carbon dioxide Nitrogen fixation = Conversion of nitrogen gas into a usable form for plants Nitrification = Conversion of ammonia into nitrites and nitrates</p> Signup and view all the answers

Which of the following human activities contributes to an increase in carbon dioxide in the atmosphere?

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

Combustion of fossil fuels decreases the amount of carbon dioxide in the atmosphere.

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

What is the primary natural source of carbon dioxide release associated with volcanic activity?

<p>Breakdown of rocks containing carbon compounds</p> Signup and view all the answers

Deforestation reduces the amount of plants available for __________.

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

Match the following carbon cycle disturbances with their descriptions:

<p>Deforestation = Reduces plants for photosynthesis Fossil Fuels = Releases CO2 from ancient remains Volcanic Activity = Releases CO2 from the Earth Combustion = Burning plant material releases CO2</p> Signup and view all the answers

Flashcards

Ecology

The study of how living things interact with each other and their environment.

Ecologist

A scientist who studies ecology.

Ecosystem

A community of living things (biotic) interacting with their non-living environment (abiotic).

Niche

The specific role an organism plays within an ecosystem, including its habitat and resources.

Signup and view all the flashcards

Producers

Organisms that make their own food using sunlight.

Signup and view all the flashcards

Primary Consumers

Organisms that eat producers, directly consuming the energy stored within them.

Signup and view all the flashcards

Secondary Consumers

Organisms that eat primary consumers, obtaining energy from the previously consumed producers.

Signup and view all the flashcards

Tertiary Consumers

Organisms that eat secondary consumers, further transferring energy up the food chain.

Signup and view all the flashcards

Decomposers

Organisms that break down dead plants and animals, recycling nutrients back into the ecosystem.

Signup and view all the flashcards

What is photosynthesis?

The process where green plants capture sunlight and convert it into chemical energy (glucose) stored in carbohydrates.

Signup and view all the flashcards

What is a food chain?

A sequence of organisms through which energy is passed, starting with producers and moving through various levels of consumers.

Signup and view all the flashcards

What is energy flow in an ecosystem?

The flow of energy through an ecosystem, starting from the Sun and moving through producers, consumers, and decomposers.

Signup and view all the flashcards

Why is there less energy available at higher trophic levels?

The usable energy decreases at each level of a food chain because some energy is lost as heat during metabolic processes.

Signup and view all the flashcards

What happens to the energy that is not used by organisms?

Energy that is not used by organisms and is lost from the ecosystem as heat, primarily through respiration.

Signup and view all the flashcards

Pyramid of Energy Flow

A diagram that shows how much energy is available at each level of a food chain, decreasing as you go higher.

Signup and view all the flashcards

Pyramid of Numbers

A graphic representation of the number of organisms at each trophic level, with more producers at the base and fewer consumers at the top.

Signup and view all the flashcards

Pyramid of Biomass

A diagram that shows the total mass of all organisms at each trophic level in a food chain. It decreases as you go up because less energy is available at higher levels, therefore fewer organisms.

Signup and view all the flashcards

10% Energy Transfer Rule

The amount of energy transferred to the next trophic level is approximately 10% of the energy from the previous level.

Signup and view all the flashcards

Trend in Pyramid of Numbers

The trend observed in a pyramid of numbers is that the number of organisms decreases as you move up the food chain from producers to top consumers.

Signup and view all the flashcards

Trend in Pyramid of Biomass

The trend observed in a pyramid of biomass is that the total biomass decreases as you move up the food chain.

Signup and view all the flashcards

Key Takeaway - Energy Flow

Both the Pyramid of Numbers and the Pyramid of Biomass illustrate how energy is transferred through an ecosystem. They show that energy is lost as it moves up the food chain.

Signup and view all the flashcards

What is the Carbon cycle?

The continuous movement of carbon through the environment involving living organisms and natural processes.

Signup and view all the flashcards

How do producers participate in the carbon cycle?

Producers, like plants and algae, capture carbon dioxide from the atmosphere and convert it into glucose using sunlight energy.

Signup and view all the flashcards

How does carbon return to the environment?

When organisms die, carbon from their bodies is recycled back into the environment through decomposers.

Signup and view all the flashcards

What is the significance of biogeochemical cycles?

Biogeochemical cycles involve the continuous movement of nutrients like carbon and oxygen through the environment, highlighting the interconnectedness of living and non-living components.

Signup and view all the flashcards

Photosynthesis

The process where plants and algae capture sunlight and convert it into chemical energy (glucose) stored in carbohydrates. This process uses carbon dioxide from the atmosphere and releases oxygen as a byproduct.

Signup and view all the flashcards

Cellular Respiration

The process where organisms break down glucose (from consuming food) to release energy for their activities. This process uses oxygen and releases carbon dioxide as a byproduct.

Signup and view all the flashcards

The Carbon Cycle

The continuous flow of carbon between the atmosphere, living organisms, and Earth's systems. It involves processes like photosynthesis, cellular respiration, decomposition, and the formation of fossil fuels.

Signup and view all the flashcards

Carbon Sequestration

The storage of carbon in dead organic matter that has not fully decomposed, such as in soil, rocks, and fossil fuels. This carbon remains in these forms for long periods, removing it from the active carbon cycle.

Signup and view all the flashcards

What is nitrogen fixation?

The conversion of atmospheric nitrogen gas (N2) into a form that can be used by living organisms.

Signup and view all the flashcards

How do fossil fuels affect the carbon cycle?

The burning of fossil fuels releases carbon dioxide into the atmosphere, contributing to climate change.

Signup and view all the flashcards

What do nitrogen-fixing bacteria do?

They play a key role in nitrogen fixation by converting nitrogen gas into ammonia.

Signup and view all the flashcards

How does deforestation affect the carbon cycle?

Deforestation disrupts the carbon cycle by reducing the number of trees, which absorb carbon dioxide from the atmosphere.

Signup and view all the flashcards

What are nitrifying bacteria?

These bacteria convert ammonia into other nitrogen compounds that plants can use.

Signup and view all the flashcards

How do plants use nitrogen?

Plants absorb ammonia and incorporate it into chlorophyll, the green pigment essential for photosynthesis.

Signup and view all the flashcards

What natural sources impact the carbon cycle?

Natural events like forest fires and volcanoes release carbon dioxide into the atmosphere, impacting the carbon cycle.

Signup and view all the flashcards

Why is the nitrogen cycle important?

Nitrogen is cycled through ecosystems, and this process is essential for life on Earth.

Signup and view all the flashcards

How does the ocean play a role in the carbon cycle?

The ocean absorbs carbon dioxide from the atmosphere, acting as a significant carbon sink.

Signup and view all the flashcards

Combustion's role in carbon cycle

The burning of plant material releases large amounts of carbon dioxide into the atmosphere, contributing to increased greenhouse gases.

Signup and view all the flashcards

Volcanic activity's role in carbon cycle

Volcanic eruptions can release carbon dioxide trapped in rocks, impacting the carbon cycle and potentially causing climate change.

Signup and view all the flashcards

Deforestation impact on carbon cycle

The removal of trees reduces the amount of carbon dioxide absorbed through photosynthesis, leading to an increase in atmospheric carbon dioxide.

Signup and view all the flashcards

Fossil fuels' impact on carbon cycle

Fossil fuels, formed from decomposed plant and animal remains, release carbon dioxide when burned, contributing to climate change.

Signup and view all the flashcards

Human impact on carbon cycle

Human activities like deforestation and burning fossil fuels have disrupted the natural balance of the carbon cycle, leading to an increase in atmospheric carbon dioxide.

Signup and view all the flashcards

More Like This

Ecosystems and Food Chains Quiz
3 questions

Ecosystems and Food Chains Quiz

IntuitiveWilliamsite avatar
IntuitiveWilliamsite
Ecosystems and Food Chains
10 questions

Ecosystems and Food Chains

DenxTV avatar
DenxTV
Ecology: Ecosystems and Food Chains
9 questions

Ecology: Ecosystems and Food Chains

SuperQuasimodo avatar
SuperQuasimodo
Ecosystems and Food Chains
45 questions

Ecosystems and Food Chains

ReceptiveJasper1685 avatar
ReceptiveJasper1685
Use Quizgecko on...
Browser
Open
Browser
Browser