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]
In 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 bacteria...
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.
Other
Pde Sas: Relationships Among Organisms
In this instructional activity, learners compare various types of relationships among organisms (i.e., biotic interactions). Students will: explain the roles of producers and consumers, and predators and prey in an ecosystem. Explain the...
Encyclopedia of Earth
Encyclopedia of Earth: Ecology: Lichen
Article describing the different categories of lichens, their physical features, how they reproduce, their evolution, and important benefits lichens provide to humans. (Published: July 19, 2010)
CK-12 Foundation
Ck 12: Endosymbiosis the Evolution of Eukaryotes
[Free Registration/Login may be required to access all resource tools.] Learn about the evolution of eukaryotes which is explained by the endosymbiotic theory.
CK-12 Foundation
Ck 12: Episd: Evolution of Eukaryotes
[Free Registration/Login may be required to access all resource tools.] Take a close look at the endosymbiotic theory scientists have developed to explain the evolution of eukaryotes. Understand that chloroplast and mitochondria used to...
DOGO Media
Dogo News: Always Craving Cookies? Blame It on Your Gut Bacteria
Learn about how the bacteria in your digestive system influence the decisions you make about the food you eat.
CK-12 Foundation
Ck 12: Episd: Coevolution
[Free Registration/Login may be required to access all resource tools.] Find out how coevolution can occur in nature and identify the endosymbiotic theory.
CK-12 Foundation
Ck 12: Life Science: Symbiosis
[Free Registration/Login may be required to access all resource tools.] Symbiosis describes a close and long-term relationship between different species. At least one species will benefit in a symbiotic relationship. There are three...
TED Talks
Ted: Ted Ed: The Rise of Human Computer Cooperation
Brute computing force alone can't solve the world's problems. Data mining innovator Shyam Sankar explains why solving big problems is not a question of finding the right algorithm, but rather the right symbiotic relationship between...
TED Talks
Ted: Ted Ed: Leaders and Followers: What Tango Teaches
This lesson illustrates the symbiotic relationship that exists between leaders and followers. So much time and emphasis is spent building leadership muscles that sometimes we forget followership skills are as equally important to...
Earth Life
Earth Life Web: What Is a Lichen?
A Lichen is made up of two parts: a fungus and an algae or cyanobacteria. To find out more read about their morphology and who benefits from this symbiotic relationship.
Science Daily
Science Daily: Algal Heat Damage and Coral Bleaching
Article identifies elevated water temperature as a cause of coral bleaching due to loss of photosynthetic ability in symbiotic algae.
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