Gr 8 Natural Sciences Ch 1.2: Feeding relationships
72 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

What is the primary source of energy for producers?

  • Dead organisms
  • Sunlight (correct)
  • Insects
  • Meat
  • Which group of organisms breaks down dead or decaying organisms?

  • Producers
  • Decomposers (correct)
  • Herbivores
  • Consumers
  • What is an organism that eats both plants and animals called?

  • Insectivore
  • Omnivore (correct)
  • Carnivore
  • Herbivore
  • What is the by-product of photosynthesis?

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

    Which type of organism forms the base of the food chain?

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

    What is the general equation for photosynthesis?

    <p>Carbon Dioxide + Water → Glucose + Oxygen</p> Signup and view all the answers

    What do producers use to synthesize their own food?

    <p>All of the above</p> Signup and view all the answers

    Which type of consumer eats primarily insects?

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

    What type of consumer is a cow?

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

    What is the role of decomposers in an ecosystem?

    <p>To break down dead or decaying matter</p> Signup and view all the answers

    What type of consumer is a hawk in a food chain?

    <p>Quaternary consumer</p> Signup and view all the answers

    What is the main difference between a food chain and a food web?

    <p>Food chains depict a single pathway, while food webs depict multiple pathways</p> Signup and view all the answers

    What happens to energy as it is transferred from one trophic level to the next?

    <p>It is lost as heat</p> Signup and view all the answers

    What is the role of predators in an ecosystem?

    <p>To regulate population sizes</p> Signup and view all the answers

    What type of consumer is a bear?

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

    What is the primary function of insectivores in an ecosystem?

    <p>To control insect populations</p> Signup and view all the answers

    What is an example of a biotic component in a pond ecosystem?

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

    What is the result of energy loss at each trophic level?

    <p>Energy decreases</p> Signup and view all the answers

    What is the primary function of producers in an ecosystem?

    <p>To form the base of the food chain and supply energy to consumers</p> Signup and view all the answers

    What is the main difference between a carnivore and an omnivore?

    <p>A carnivore eats only meat, while an omnivore eats both plants and animals</p> Signup and view all the answers

    What is the ultimate source of energy for consumers in an ecosystem?

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

    What is the role of herbivores in an ecosystem?

    <p>To consume producers for energy</p> Signup and view all the answers

    What is the primary function of decomposers in an ecosystem?

    <p>To recycle nutrients back into the ecosystem</p> Signup and view all the answers

    What is the result of energy flow in an ecosystem?

    <p>Energy is lost at each trophic level</p> Signup and view all the answers

    What is the significance of producers in carbon and oxygen cycling?

    <p>They produce oxygen and absorb carbon dioxide</p> Signup and view all the answers

    What is the role of consumers in an ecosystem?

    <p>To obtain energy by consuming other organisms</p> Signup and view all the answers

    What is the primary function of herbivores in an ecosystem?

    <p>To transfer energy from producers to higher trophic levels</p> Signup and view all the answers

    What is the characteristic of omnivores in terms of their position in the food chain?

    <p>They can occupy multiple trophic levels</p> Signup and view all the answers

    What is the primary reason for the limitation of trophic levels in an ecosystem?

    <p>The energy loss at each trophic level</p> Signup and view all the answers

    What is the role of decomposers in maintaining ecosystem health?

    <p>To recycle nutrients and support ecosystem health</p> Signup and view all the answers

    What is the benefit of food webs over food chains?

    <p>They provide a more accurate representation of ecosystem complexity</p> Signup and view all the answers

    What is the significance of predator-prey relationships in ecosystems?

    <p>They help regulate population sizes and maintain ecosystem balance</p> Signup and view all the answers

    What is the primary characteristic of a food chain?

    <p>It is a linear sequence of energy and nutrient flow</p> Signup and view all the answers

    What is the result of the recycling of nutrients by decomposers?

    <p>The availability of essential nutrients for producers</p> Signup and view all the answers

    What is the primary function of carnivores in an ecosystem?

    <p>To feed on other animals, transferring energy from one trophic level to the next</p> Signup and view all the answers

    What is the characteristic of a pond ecosystem?

    <p>It is an aquatic ecosystem with interactions between biotic and abiotic components</p> Signup and view all the answers

    What is the primary function of producers in an ecosystem?

    <p>To synthesize their own food from inorganic substances</p> Signup and view all the answers

    What is the ultimate source of energy for consumers in an ecosystem?

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

    What is the primary role of decomposers in an ecosystem?

    <p>To recycle nutrients back into the ecosystem</p> Signup and view all the answers

    What is the characteristic of consumers in an ecosystem?

    <p>They cannot produce their own food and must obtain energy by consuming other organisms</p> Signup and view all the answers

    What is the significance of producers in carbon and oxygen cycling?

    <p>They release oxygen and absorb carbon dioxide</p> Signup and view all the answers

    What is the flow of energy in an ecosystem?

    <p>From producers to consumers</p> Signup and view all the answers

    What is the result of energy transfer from one trophic level to the next?

    <p>Energy is lost as heat</p> Signup and view all the answers

    What is the primary function of herbivores in an ecosystem?

    <p>To consume plants for energy</p> Signup and view all the answers

    What is the primary function of herbivores in an ecosystem?

    <p>To transfer energy stored in plants to higher trophic levels</p> Signup and view all the answers

    What is the main difference between a food chain and a food web?

    <p>A food chain is a simpler representation of feeding relationships, while a food web is more complex</p> Signup and view all the answers

    Why do ecosystems typically have a pyramidal energy structure?

    <p>Because energy is lost as heat at each trophic level</p> Signup and view all the answers

    What is the role of insectivores in an ecosystem?

    <p>To help control insect populations and serve as prey for higher-level carnivores</p> Signup and view all the answers

    What is the result of the continuous recycling of nutrients by decomposers?

    <p>The availability of essential nutrients for producers</p> Signup and view all the answers

    What is the significance of predator-prey relationships in ecosystems?

    <p>They help regulate the population of herbivores and maintain balance in ecosystems</p> Signup and view all the answers

    What is the primary characteristic of a food chain?

    <p>It is a linear sequence of energy transfer from one organism to another</p> Signup and view all the answers

    What is the role of omnivores in an ecosystem?

    <p>To occupy multiple trophic levels and play a flexible role in food webs</p> Signup and view all the answers

    What is the primary function of carnivores in an ecosystem?

    <p>To control the population of herbivores and maintain balance in ecosystems</p> Signup and view all the answers

    What is the benefit of food webs over food chains?

    <p>Food webs provide a more accurate representation of the complexity of feeding relationships in ecosystems</p> Signup and view all the answers

    Which type of consumer has the most flexible role in a food web?

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

    What is the primary reason for the limitation of trophic levels in an ecosystem?

    <p>Energy loss at each trophic level</p> Signup and view all the answers

    What is the significance of decomposers in maintaining ecosystem health?

    <p>They recycle organic matter, returning nutrients to the soil</p> Signup and view all the answers

    What is the characteristic of a food web that distinguishes it from a food chain?

    <p>It illustrates the interconnectedness of various food chains</p> Signup and view all the answers

    What is the primary function of producers in an ecosystem?

    <p>To provide energy to consumers</p> Signup and view all the answers

    What is the result of energy transfer from one trophic level to the next?

    <p>Energy is lost as heat at each trophic level</p> Signup and view all the answers

    What is the significance of predator-prey relationships in ecosystems?

    <p>They control the populations of herbivores</p> Signup and view all the answers

    What is the primary function of insectivores in an ecosystem?

    <p>To regulate the insect population</p> Signup and view all the answers

    What is the characteristic of a pyramidal energy structure in an ecosystem?

    <p>Energy decreases as you move up the trophic levels</p> Signup and view all the answers

    What is the primary role of decomposers in nutrient cycling?

    <p>To release nutrients back into the soil</p> Signup and view all the answers

    What is the primary function of producers in an ecosystem, other than producing their own food?

    <p>To form the base of the food chain and supply energy to other organisms.</p> Signup and view all the answers

    What is the consequence of energy loss at each trophic level in an ecosystem?

    <p>A reduction in the energy available to organisms at the next trophic level.</p> Signup and view all the answers

    What is the significance of producers in carbon and oxygen cycling?

    <p>They produce oxygen as a by-product of photosynthesis and absorb carbon dioxide from the atmosphere.</p> Signup and view all the answers

    What is the primary characteristic of a carnivore in an ecosystem?

    <p>It primarily eats other animals.</p> Signup and view all the answers

    What is the role of decomposers in maintaining ecosystem health?

    <p>To break down dead or decaying organisms and recycle nutrients.</p> Signup and view all the answers

    What is the primary difference between a food chain and a food web?

    <p>A food chain is a complex network of trophic interactions, while a food web is a linear sequence of trophic levels.</p> Signup and view all the answers

    What is the ultimate source of energy for consumers in an ecosystem?

    <p>Producers, through the process of photosynthesis.</p> Signup and view all the answers

    What is the primary characteristic of an ecosystem with a pyramidal energy structure?

    <p>Energy is lost at each trophic level, resulting in a decrease in energy availability.</p> Signup and view all the answers

    More Like This

    Trophic Levels in Ecosystems
    12 questions

    Trophic Levels in Ecosystems

    StunningAltoSaxophone avatar
    StunningAltoSaxophone
    Ecosystem Ecology and Energy Flow
    10 questions
    Ecosystem Ecology and Food Chains Quiz
    30 questions
    Use Quizgecko on...
    Browser
    Browser