Food Chains and Food Webs Quiz
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Questions and Answers

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.

    True

    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.

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

    Match the organism to its respective trophic level:

    <p>Caterpillar = Primary consumer Finch = Secondary consumer Owl = Tertiary consumer Grass = Producer</p> Signup and view all the answers

    Which of the following organisms is a secondary consumer in the food chain where the kingfisher is a secondary consumer?

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

    Duckweed serves as a consumer in the river ecosystem.

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

    Which of the following organisms is a primary consumer in the food chain?

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

    A producer is an organism that cannot make its own food and must consume other organisms.

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

    What type of organisms do red fins eat?

    <p>Mayflies, yabbies, worms</p> Signup and view all the answers

    What role do detritivores and decomposers play in the food chain?

    <p>They break down dead organisms and return nutrients to the ecosystem.</p> Signup and view all the answers

    In a desert ecosystem, crickets primarily eat _______.

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

    Food chains show feeding relationships between organisms and arrows are used to show the flow of the ______ through an ecosystem.

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

    Match the following organisms with their roles in the food chain:

    <p>Grass = Producer Kingfisher = Tertiary consumer Cricket = Primary consumer Heron = Top predator</p> Signup and view all the answers

    Match the following organisms with their correct classification:

    <p>Grass = Producer Grasshopper = Primary Consumer Snake = Secondary Consumer Eagle = Top Carnivore</p> Signup and view all the answers

    What would likely happen to the population of flat winkles if the crab population suddenly decreased?

    <p>It would increase.</p> Signup and view all the answers

    If algae population increases, the seal population will remain unchanged.

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

    Name one secondary consumer in the described food web.

    <p>Fox or Cobra</p> Signup and view all the answers

    If the field mice died, the number of ______ would likely decrease.

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

    Match the following organisms with their roles in the food web:

    <p>Grass = Producer Field mouse = Primary consumer Fox = Secondary consumer Wheat = Producer</p> Signup and view all the answers

    What is the effect of parasitism on the host organism?

    <p>It harms the host.</p> Signup and view all the answers

    Ectoparasites live inside the host organism.

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

    What is an example of an ectoparasite?

    <p>Tick or mistletoe</p> Signup and view all the answers

    The _____ is the organism that benefits from parasitism.

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

    Match the type of parasite with its description:

    <p>Ectoparasites = Live on or outside the host Endoparasites = Live inside the host Mistletoe = A parasitic plant that takes nutrients from the host Roundworm = A type of worm that can infect various animals and humans</p> Signup and view all the answers

    Which of the following describes the roundworm Ascaris lumbricoides?

    <p>It infects humans via the fecal-oral route.</p> Signup and view all the answers

    Nearly one-sixth of the human population has been infected by roundworms at some point.

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

    How do roundworms typically infect a new human host?

    <p>By ingestion of contaminated food or water</p> Signup and view all the answers

    Parasitism typically results in a _____ for the host organism.

    <p>negative effect</p> Signup and view all the answers

    What is the typical outcome for the host in a parasitic relationship?

    <p>The host's lifespan may be shortened.</p> Signup and view all the answers

    What type of relationship is parasitism?

    <p>A relationship in which one species benefits at the expense of the other</p> Signup and view all the answers

    All ectoparasites live their entire lives on their host without leaving.

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

    What is the primary mode of feeding for roundworms and tapeworms?

    <p>They consume the host's partly digested food.</p> Signup and view all the answers

    Lice can be treated with special _____ and lice combs.

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

    Match the type of parasite with its description:

    <p>Fleas = Live on the host all their lives Ticks = Feed at specific times and then leave the host Leeches = Attach to the skin and consume blood Plasmodium Falciparum = Causes malaria and is spread by mosquitos</p> Signup and view all the answers

    Which of the following is an example of commensalism?

    <p>A bird nesting in a tree hollow</p> Signup and view all the answers

    Endoparasites live on the outside of their host.

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

    What is the typical effect of parasites on their hosts?

    <p>They deprive the host of nutrients.</p> Signup and view all the answers

    The larvae of parasites can be _____, allowing them to re-enter the host's gut.

    <p>coughed up</p> Signup and view all the answers

    Which organism is commonly known to cause athlete's foot?

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

    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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    Related Documents

    L5 and 6 Food Chains PDF

    Description

    Test your knowledge on food chains and food webs, key concepts in understanding ecosystem dynamics. This quiz covers the roles of producers and consumers, trophic levels, and the complexity of food webs in relation to energy flow. Prepare to explore the intricate feeding relationships within an ecosystem!

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