Podcast
Questions and Answers
What is the primary role of producers in a food chain?
What is the primary role of producers in a food chain?
- They compete for resources
- They produce energy through photosynthesis (correct)
- They consume other organisms
- They decompose organic matter
A primary consumer feeds on producers.
A primary consumer feeds on producers.
True (A)
What is a food web?
What is a food web?
A complex network of feeding relationships among various organisms in an ecosystem.
The _____ consumer is the first consumer in the food chain.
The _____ consumer is the first consumer in the food chain.
Match the organism to its respective trophic level:
Match the organism to its respective trophic level:
Which of the following organisms is a secondary consumer in the food chain where the kingfisher is a secondary consumer?
Which of the following organisms is a secondary consumer in the food chain where the kingfisher is a secondary consumer?
Duckweed serves as a consumer in the river ecosystem.
Duckweed serves as a consumer in the river ecosystem.
Which of the following organisms is a primary consumer in the food chain?
Which of the following organisms is a primary consumer in the food chain?
A producer is an organism that cannot make its own food and must consume other organisms.
A producer is an organism that cannot make its own food and must consume other organisms.
What type of organisms do red fins eat?
What type of organisms do red fins eat?
What role do detritivores and decomposers play in the food chain?
What role do detritivores and decomposers play in the food chain?
In a desert ecosystem, crickets primarily eat _______.
In a desert ecosystem, crickets primarily eat _______.
Food chains show feeding relationships between organisms and arrows are used to show the flow of the ______ through an ecosystem.
Food chains show feeding relationships between organisms and arrows are used to show the flow of the ______ through an ecosystem.
Match the following organisms with their roles in the food chain:
Match the following organisms with their roles in the food chain:
Match the following organisms with their correct classification:
Match the following organisms with their correct classification:
What would likely happen to the population of flat winkles if the crab population suddenly decreased?
What would likely happen to the population of flat winkles if the crab population suddenly decreased?
If algae population increases, the seal population will remain unchanged.
If algae population increases, the seal population will remain unchanged.
Name one secondary consumer in the described food web.
Name one secondary consumer in the described food web.
If the field mice died, the number of ______ would likely decrease.
If the field mice died, the number of ______ would likely decrease.
Match the following organisms with their roles in the food web:
Match the following organisms with their roles in the food web:
What is the effect of parasitism on the host organism?
What is the effect of parasitism on the host organism?
Ectoparasites live inside the host organism.
Ectoparasites live inside the host organism.
What is an example of an ectoparasite?
What is an example of an ectoparasite?
The _____ is the organism that benefits from parasitism.
The _____ is the organism that benefits from parasitism.
Match the type of parasite with its description:
Match the type of parasite with its description:
Which of the following describes the roundworm Ascaris lumbricoides?
Which of the following describes the roundworm Ascaris lumbricoides?
Nearly one-sixth of the human population has been infected by roundworms at some point.
Nearly one-sixth of the human population has been infected by roundworms at some point.
How do roundworms typically infect a new human host?
How do roundworms typically infect a new human host?
Parasitism typically results in a _____ for the host organism.
Parasitism typically results in a _____ for the host organism.
What is the typical outcome for the host in a parasitic relationship?
What is the typical outcome for the host in a parasitic relationship?
What type of relationship is parasitism?
What type of relationship is parasitism?
All ectoparasites live their entire lives on their host without leaving.
All ectoparasites live their entire lives on their host without leaving.
What is the primary mode of feeding for roundworms and tapeworms?
What is the primary mode of feeding for roundworms and tapeworms?
Lice can be treated with special _____ and lice combs.
Lice can be treated with special _____ and lice combs.
Match the type of parasite with its description:
Match the type of parasite with its description:
Which of the following is an example of commensalism?
Which of the following is an example of commensalism?
Endoparasites live on the outside of their host.
Endoparasites live on the outside of their host.
What is the typical effect of parasites on their hosts?
What is the typical effect of parasites on their hosts?
The larvae of parasites can be _____, allowing them to re-enter the host's gut.
The larvae of parasites can be _____, allowing them to re-enter the host's gut.
Which organism is commonly known to cause athlete's foot?
Which organism is commonly known to cause athlete's foot?
Flashcards
Food Chain
Food Chain
A diagram that shows the feeding relationships between organisms and the flow of energy in an ecosystem.
Producer
Producer
An organism that makes its own food using energy from the sun, typically through photosynthesis.
Consumer
Consumer
An organism that gets its energy by eating other organisms (or producers).
Primary Consumer
Primary Consumer
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Secondary Consumer
Secondary Consumer
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Tertiary Consumer
Tertiary Consumer
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Top Carnivore
Top Carnivore
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Trophic Level
Trophic Level
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Herbivore
Herbivore
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Carnivore
Carnivore
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Omnivore
Omnivore
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Predator
Predator
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Prey
Prey
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Detritivores/Decomposers
Detritivores/Decomposers
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Food Chain
Food Chain
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Trophic Level
Trophic Level
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Producer
Producer
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Primary Consumer
Primary Consumer
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Secondary Consumer
Secondary Consumer
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Tertiary Consumer
Tertiary Consumer
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Quaternary Consumer
Quaternary Consumer
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Food Web
Food Web
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Autotroph
Autotroph
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Heterotroph
Heterotroph
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Photosynthesis
Photosynthesis
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Herbivore
Herbivore
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Omnivore
Omnivore
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Food Web
Food Web
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Food Chain
Food Chain
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Producer
Producer
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Primary Consumer
Primary Consumer
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Secondary Consumer
Secondary Consumer
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Herbivore
Herbivore
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Carnivore
Carnivore
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Omnivore
Omnivore
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Population Decrease (e.g., crabs)
Population Decrease (e.g., crabs)
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Population Increase (e.g., flat winkles)
Population Increase (e.g., flat winkles)
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Food Web disruption
Food Web disruption
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Overfishing
Overfishing
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Cricket food
Cricket food
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River producer
River producer
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Redfin food
Redfin food
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Kingfisher (level 3) food chain
Kingfisher (level 3) food chain
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Kingfisher (level 4) food chain
Kingfisher (level 4) food chain
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Producer (pond)
Producer (pond)
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Pond consumer (carp)
Pond consumer (carp)
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Pond consumer (trout)
Pond consumer (trout)
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Desert Producer (1)
Desert Producer (1)
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Desert Producer (2)
Desert Producer (2)
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Desert Consumer (crickets)
Desert Consumer (crickets)
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Desert consumer (mice)
Desert consumer (mice)
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Desert consumer (bats)
Desert consumer (bats)
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Desert consumer (hawks)
Desert consumer (hawks)
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Tadpole food
Tadpole food
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Crowfish food
Crowfish food
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Dragonfly larvae food
Dragonfly larvae food
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Blue fish food
Blue fish food
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Spikefish food
Spikefish food
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Heron food
Heron food
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Leaf-eating insect food
Leaf-eating insect food
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Sap-sucking insects food
Sap-sucking insects food
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Starling food
Starling food
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Goshawk food source
Goshawk food source
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Spider food source
Spider food source
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Parasitism
Parasitism
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Parasite
Parasite
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Host
Host
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Ectoparasite
Ectoparasite
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Endoparasite
Endoparasite
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Mistletoe
Mistletoe
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Roundworm (Ascaris lumbricoides)
Roundworm (Ascaris lumbricoides)
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Endoparasite
Endoparasite
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Ectoparasite
Ectoparasite
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Parasitism
Parasitism
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Commensalism
Commensalism
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Roundworm life cycle
Roundworm life cycle
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Roundworm habitat
Roundworm habitat
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Tick parasite
Tick parasite
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Lice
Lice
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Fleas
Fleas
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Leeches
Leeches
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Malaria
Malaria
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Study Notes
Food Chains and Food Webs
- Food chains show feeding relationships and energy flow in an ecosystem.
- Arrows indicate the direction of energy transfer.
- Food chains begin with autotrophs (producers) such as plants, algae, or seaweed that use sunlight for photosynthesis to make their own food.
- Heterotrophs (consumers) eat other organisms for energy. Primary consumers eat producers, secondary consumers eat primary consumers, and so on.
- Tertiary and sometimes quaternary consumers are higher in the food chain.
- Food webs represent multiple interconnected food chains.
- Animals often eat more than one type of organism, making part of multiple food chains.
- Food availability may vary throughout the year (seasonal changes) which makes food webs more complex.
- Food webs better represent feeding relationships in an ecosystem than simple food chains.
Trophic Levels
- Trophic levels represent different feeding positions in a food chain or web.
- Trophic level 1 is always the producer.
- Subsequent levels show various consumers, with the highest level typically the top carnivore.
- The position/level of an organism determines its role in the ecosystem.
- Consumers gain energy from eating organisms at the lower trophic level or trophic levels.
- Organisms at higher trophic levels generally get less energy.
Energy Transfer in Food Chains/Webs
- Energy is lost at each trophic level (typically about 90%).
- Energy is used by organisms for life processes like movement and reproduction.
- Lost energy is not completely lost; decomposers break down organic matter and recycling nutrients.
- An organism isn't 100% effective at capturing all available energy.
- There is more prey than predators in a food chain due to energy loss along the chain.
- Not all parts of an organism are edible or digestible. Some matter that is not eaten and digested is also lost for the next consumer.
- Waste products (feces, urine) are another form of energy loss.
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