Symbiotic Relationships

Mutualism

• One organism benefits, while the other is neither harmed nor benefited

• Both organisms benefit

• One organism benefits, while other is harmed

• Both organisms are harmed

Commensalism

• One organism benefits, while the other is neither harmed nor benefited

• Both organisms benefit

• One organism benefits, and the other is harmed

• Both organisms are harmed

Parasitism

• One organism benefits, while the other is neither harmed nor benefited

• Both organisms benefit

• One organism benefits, and the other is harmed

• Both organisms are harmed

Which of the following is NOT an example of a host?

• Flea

• Shark

• Barnacle

• Roundworm

While a dogs receives food, shelter, and care from humans, humans receive love and companionship from dogs. What kind of relationship do they share?

• Parasitism

• Mutualism

• Commensalism

• Predator-prey

While a spider spins a web onto a tree branch for shelter, the tree remains unharmed. What type of relationship do they share?

• Mutualism

• Parasitism

• Commensalism

• Predator-prey

While a tapeworm feasts off of the digestive system of a human for nutrients, the human becomes very ill, and develops a stomach flu. What kind of relationship do they share?

• Predator-prey

• Parasitism

• Commensalism

• Mutualism

Snake---> Frog---> Grasshopper---> Grass

Which kind of relationship do these animals share?

• Mutualism

• Predator-prey

• Commensalism

• Parasitism

How does a host infect an organism?

• On the surface

• Inside the body

• Both

• Neither

In commensalistic relationship, which of the following does NOT benefit organisms?

• Protection

• Transportation

• Shelter

• Food/Water