Summary
Close, long-term interaction between species, including mutualism, commensalism and parasitism.
In depth
Mutualism (+/+) such as clownfish and anemones; commensalism (+/0) such as epiphytic orchids on trees; parasitism (+/-) like tapeworms and ticks. Boundaries can shift with conditions.
Interactions can change along a spectrum depending on conditions. Parasites may influence host behaviour. Obligate symbiosis shows tight coevolution.
Example: cleaner fish and clients show mutualism that can break down when cheating occurs.
Frequently asked questions
What is Symbiosis?
Close, long-term interaction between species, including mutualism, commensalism and parasitism.
Which area of biology covers Symbiosis, and how advanced is it?
Symbiosis is one of the 54 topics in Ecology. It is rated Beginner, so it suits learners who are starting out in biology. Related topics in this area include Mutualism, Exponential Growth, Decomposers.
Can you give an example of Symbiosis?
Gut bacteria help digest food and make vitamin K while receiving nutrients and a habitat.
What should I learn before Symbiosis?
Symbiosis is a Beginner topic, so no earlier topic is required. Other Beginner topics in Ecology that pair well with it include Ecology, Ecosystem, Biotic and Abiotic Factors.
What topics are related to Symbiosis?
The closest topics to Symbiosis are Mutualism, Exponential Growth, Decomposers, Habitat and Niche. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Symbiosis?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Symbiosis. To practise the whole of Ecology, use the Ecology quiz.
How is Symbiosis different from Mutualism?
Symbiosis: Close, long-term interaction between species, including mutualism, commensalism and parasitism. Mutualism: An interaction benefiting both species, like bees and flowering plants or mycorrhizal fungi and roots. Read both side by side and note what each one explains.
How should I study Symbiosis step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Mutualism and explain the difference aloud. Finally, take the Ecology quiz and come back to this page for any question you miss.