National Geographic
National Geographic: Symbiotic Relationships in Marine Ecosystems
In this lesson students analyze videos to make observations about species, populations, and communities of organisms and discuss their symbiotic relationships. Then they create a hypothetical marine ecosystem and describe the adaptive,...
CK-12 Foundation
Ck 12: Life Science: Symbiotic Relationships of Fungi
[Free Registration/Login may be required to access all resource tools.] Fungi don't live in isolation. They often interact with other species. In fact, fungi can be dependent on another organism for survival. When two species live close...
Science Struck
Science Struck: Symbiotic Relationships in the Deciduous Forest
Explains what a symbiotic relationship is, the five main types of symbiosis, and provides examples of symbiotic relationships among living things in a deciduous forest.
MadSci Network
Symbiotic Relationships in the Deciduous Forest
A brief definition of symbiotic, followed by explanations of mutualism, commensalism, and parasitism.
Sophia Learning
Sophia: Symbiotic Relationships: Lesson 2
This lesson will introduce the three types of symbiotic relationships and give examples of each. It is 2 of 4 in the series titled "Symbiotic Relationships."
Sophia Learning
Sophia: Symbiotic Relationships: Lesson 4
This lesson will introduce the three types of symbiotic relationships and give examples of each. It is 4 of 4 in the series titled "Symbiotic Relationships."
Science Struck
Science Struck: Symbiotic Relationships in the Desert
Describes three types of symbiotic relationships that can be found in a desert biome.
NC State University
North Carolina State University: Symbiotic Relationships
Includes a description of symbiosis in general, then lists and defines types of symbiosis including mutualism, commensalism, parasitism, competition, and neutralism. Includes a chart which summarizes the different types of relationships....
CK-12 Foundation
Ck 12: Biology: Symbiotic Relationships of Fungi
[Free Registration/Login may be required to access all resource tools.] Discusses parasitic and mutualistic relationships of fungi.
Science Education Resource Center at Carleton College
Serc: It Takes Teamwork: How Endosymbiosis Changed Life on Earth
A tutorial on symbiotic relationships that explores the differences between prokaryotic and eukaryotic cells as well as the origins of eukaryotic organelles possibly being from endosymbiotic relationship. This tutorial also offers...
CK-12 Foundation
Ck 12: Episd: Symbiosis
[Free Registration/Login may be required to access all resource tools.] Identify and understand the various types of symbiotic relationships. Recognize the three primary kinds of symbiosis.
University of Hamburg
University of Hamburg: Symbiosis & Normal Microbiota
A diagram of the different types of symbiosis. There are 4 examples of symbiotic relationships and explanations. Read this page and then give yourself a quiz.
University of South Florida
Project Oceanography: Single Celled Organisms [Pdf]
For this lesson, students explore three kinds of symbiotic relationships involving unicellular organisms. They will also look more closely at the relationship between zooxanthellae and coral, and the importance of nitrogen-fixing...
Science Struck
Science Struck: Symbiotic Relationships in the Rainforest
Explains what mutualism, commensalism, and parasitism are.
Science Struck
Science Struck: Symbiotic Relationships in the Tundra
Explains what mutualism, commensalism, and parasitism look like in a tundra biome.
Science Struck
Science Struck: Mutualism Relationships
Learn how mutualism benefits the organisms in a symbiotic relationship and what the different types of mutualism are. Provides lots of examples.
TED Talks
Ted: Ted Ed: How We Think Complex Cells Evolved
Adam Jacobson explains endosymbiosis, a type of symbiosis in which one symbiotic organism lives inside another. [5:42]
PBS
Nh Pbs: Nature Works: Decomposers
This site gives a detailed overview of "decomposers": bacteria, fungi, and earthworms. Content includes a look at how decomposers contribute to a symbiotic relationship.
CK-12 Foundation
Ck 12: Life Science: 12.9 Symbiosis
Learn about the many types of symbiotic relationships in an ecosystem.
CommonLit
Common Lit: Clownfish and Sea Anemone
Clownfish and sea anemone have a special relationship-a "symbiotic relationship." As you read, take notes on the specific ways in which clownfish and sea anemones contribute to their symbiotic relationship. It also offers a guided...
University of Nebraska
University of Nebraska State Museum: Brazil Nut Tree Community
Investigate the numerous symbiotic relationships that exist between the Brazilian Nut Tree and six other organisms in its community.
PBS
Pbs Teachers: Volcanoes of the Deep
Discuss how individual organisms and groups of organisms interact with each other, and research and classify symbiotic relationships between individual organisms of different species.
BiologyWise
Biology Wise: What Are Nitrogen Fixing Bacteria
Describes symbiotic relationship between leguminous plants and nitrogen-fixing bacteria. Explains the mechanism the bacteria use to fix nitrogen, the chemical formula involved, and different types of nitrogen-fixing bacteria.
CK-12 Foundation
Ck 12: Life Science: 6.11 Fungi Symbiosis
Explore the symbiotic relationships involving fungi.
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