Symbiotic Relationships in Nature: Types and Examples

The video tutorial covers symbiotic relationships, focusing on mutualism, parasitism, and commensalism. It explains each type with examples, such as bacteria in intestines for mutualism, ticks on dogs for parasitism, and remora fish with sharks for commensalism. The tutorial includes practice problems to help identify these relationships and concludes with a recap and additional resources for further learning.

What is the definition of symbiosis?

• A relationship where one species always benefits

• A long-term association between two or more species

• A short-term interaction between two species

• A competitive relationship between species

In mutualism, what is the outcome for the organisms involved?

• Both organisms benefit

• One organism benefits, the other is harmed

• One organism benefits, the other is unaffected

• Both organisms are harmed

Which of the following is an example of mutualism?

• Bacteria aiding digestion in a gazelle

• A cowbird laying eggs in another bird's nest

• A remora fish swimming with a shark

• A tick feeding on a dog

What happens in a parasitic relationship?

• One organism benefits, the other is unaffected

• Both organisms benefit

• One organism benefits, the other is harmed

• Both organisms are unaffected

Which example illustrates commensalism?

• Bacteria aiding digestion in a gazelle

• A remora fish swimming with a shark

• A tick feeding on a dog

• A cowbird laying eggs in another bird's nest

In the practice problem with the rhino and oxpecker, what type of symbiosis is demonstrated?

• Mutualism

• Commensalism

• Parasitism

• Competition

What type of symbiosis is shown by the orchid and the tree?

• Predation

• Mutualism

• Commensalism

• Parasitism

In the example of the cowbird, what type of symbiotic relationship is described?

• Commensalism

• Parasitism

• Mutualism

• Neutralism

What is the main characteristic of commensalism?

• Both organisms are harmed

• One organism benefits, the other is unaffected

• One organism benefits, the other is harmed

• Both organisms benefit

Which term describes the process where two organisms evolve together over time?

• Parasitism

• Mutualism

• Co-evolution

• Symbiosis