Food Chains and Food Webs Quiz
16 Questions
1 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 reason why there are fewer organisms at higher trophic levels?

  • The energy transfer between trophic levels is only 10% efficient. (correct)
  • Organisms at higher trophic levels reproduce more slowly.
  • Organisms at higher trophic levels require more food.
  • Organisms at higher trophic levels are more likely to be preyed upon.

Which trophic level stores the most energy?

  • Tertiary consumers
  • Primary producers (correct)
  • Secondary consumers
  • Primary consumers

Why are decomposers typically not shown in food webs?

  • Decomposers are too small to be represented.
  • Decomposers consume organisms from all trophic levels, so their arrows would point everywhere. (correct)
  • Decomposers are not important to the ecosystem.
  • Decomposers are not considered a part of the food chain.

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

<p>Food webs are more complex and show interconnected relationships. (C)</p> Signup and view all the answers

What would likely happen if all the wolves were removed from an ecosystem?

<p>The population of deer would increase. (C)</p> Signup and view all the answers

How do invasive species affect food webs?

<p>Invasive species often compete with native species for resources. (B)</p> Signup and view all the answers

What is the difference between a primary consumer and a secondary consumer?

<p>Primary consumers eat producers, while secondary consumers eat other consumers. (D)</p> Signup and view all the answers

Which of these is NOT a characteristic of a food web?

<p>It is a simplified representation of the ecosystem. (B)</p> Signup and view all the answers

Which of the following organisms are considered consumers?

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

What role do producers play in an ecosystem?

<p>They perform photosynthesis to make their own food. (C)</p> Signup and view all the answers

What type of organism is a panda classified as?

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

Which of the following statements accurately describes decomposers?

<p>They are organisms that feed on organic matter. (A)</p> Signup and view all the answers

In a food chain, what do the arrows represent?

<p>The direction of energy flow. (B)</p> Signup and view all the answers

Which example represents a scavenger?

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

What is the primary function of herbivores in a food chain?

<p>To consume plants and convert them into energy. (D)</p> Signup and view all the answers

Removing a primary consumer from a food web would likely result in what?

<p>An increase in the population of producers. (B)</p> Signup and view all the answers

Flashcards

Producers

Organisms that make their own food through photosynthesis, using sunlight to convert carbon dioxide and water into glucose and oxygen.

Consumers

Organisms that consume other organisms for energy. They cannot produce their own food.

Herbivore

Organisms that only eat plants or other producers.

Carnivore

Organisms that only eat animals.

Signup and view all the flashcards

Omnivore

Organisms that eat both plants and animals.

Signup and view all the flashcards

Decomposers

Organisms that feed on the remains of dead organisms or animal waste.

Signup and view all the flashcards

Food Chain

A diagram illustrating the feeding relationships between different organisms in an ecosystem, showing who eats whom.

Signup and view all the flashcards

Food Web

A complex network of interconnected food chains, showing all the feeding relationships within an ecosystem.

Signup and view all the flashcards

Trophic Level

The position of an organism in a food chain based on its feeding level.

Signup and view all the flashcards

Primary Producers

Organisms that make their own food through photosynthesis, forming the base of the food chain.

Signup and view all the flashcards

Primary Consumers

Organisms that eat primary producers, getting energy from them.

Signup and view all the flashcards

Secondary Consumers

Organisms that eat primary consumers, getting energy from them.

Signup and view all the flashcards

Tertiary Consumers

Organisms that eat secondary consumers, getting energy from them.

Signup and view all the flashcards

The 10% Rule

The process where only 10% of energy from one trophic level is transferred to the next.

Signup and view all the flashcards

Study Notes

Food Chains and Food Webs

  • Food chains and food webs illustrate feeding relationships in ecosystems
  • Food chains: show a simple linear path of who eats whom
  • Food webs: show more complex and interconnected feeding relationships (multiple food chains)

Learning Goals

  • Build food webs and food chains
  • Identify the trophic level of an organism (its position in a food chain)
  • Determine how removing or adding an organism affects the food web

Consumers

  • Consumers obtain energy by consuming other organisms
  • Examples: white-tailed deer, spiny softshell turtle, green heron

Producers

  • Producers create their own food through photosynthesis
  • Examples: sugar maple tree, moss, ostrich fern

Decomposers/Detritivores

  • Decomposers/Detritivores break down organic matter (dead organisms/waste)
  • Examples: chicken of the woods fungi, lichen, worms, insects, bacteria

Photosynthesis

  • CO2 + H2O → C6H12O6 + O2
  • Producers use sunlight to convert carbon dioxide and water into glucose (food) and oxygen

Consumers/Heterotrophs

  • Organisms that obtain energy from other organisms
  • Herbivores: only eat plants/producers
    • Examples: panda, giraffe, rabbit
  • Carnivores: only eat animals
    • Examples: lion, lynx
  • Omnivores: eat both plants and animals
    • Examples: humans, dogs
  • Scavengers: eat remains of dead organisms
    • Examples: vultures

Trophic Levels

  • Trophic levels describe feeding positions in a food chain
  • Organisms are classified according to their feeding level compared to the producers
  • Trophic level changes depending on food sources/predators

Arrows in Food Chains/Webs

  • Arrows in food chains and webs point towards the organism that eats
  • Arrows represent energy flow

The 10% Rule

  • Each trophic level only transfers 10% of energy to the next level
  • Limits the number of trophic levels an ecosystem can support
  • More organisms at lower trophic levels because of energy transfer limits

Role of Decomposers

  • Decomposers/Detritivores are crucial for breaking down organic material
  • Food webs typically don't explicitly include decomposers but are essential for nutrient cycling

Food Webs

  • Food chains are simplified models, not found in nature
  • Food webs show interconnected food chains in an ecosystem exhibiting more accurate feeding relationships
  • Food webs are useful for studying the impacts of removing or adding species

What is a Food Web?

  • A food web represents all the interconnected food chains in an ecosystem
  • It reveals the feeding relationships between all living organisms
  • Useful tools for studying impacts of changes in an ecosystem (removal/addition of species)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Food Chains and Food Webs PDF

Description

Test your knowledge of food chains and food webs in ecosystems. This quiz will help you understand the relationships between producers, consumers, and decomposers, as well as the impact of removing or adding organisms. Engage with the concepts of trophic levels and photosynthesis.

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser