Intro to Ecology and Organism Relationships

What is Ecology?

• The study of economics

• The study of the environment

• The study of relationships between living organisms

Which of the following is NOT an organism found in Yellowstone National Park

• Elk

• Bald Eagle

• Beaver

• Atlantic Coast Leopard Frog

Which of the following is NOT a living thing?

• water

• bacteria

• algae

• frogs

Name 3 biotic components and 2 abiotic components of the ecosystem pictured

What is competition?

• Competition exists when multiple organisms vie for the same, limiting resource.

• Competition describes an interaction that benefits both species

• Competition is an interaction where one species benefits and the other remains unaffected

What resources do organisms compete for?

• food

• all of the above

• shelter

• water

What is predation?

• Predation exists when multiple organisms vie for the same, limiting resource

• Predation is a relationship in which one organism benefits and the other organism is harmed, but not always killed

• Predation includes any interaction between two species in which one species benefits by obtaining resources from and to the detriment of the other

What is mutualism?

• Mutualism describes an interaction that benefits both species.

• Mutualism is when one organism eats another organism to obtain nutrients.

• Mutualism is an interaction where one species benefits and the other remains unaffected

What is commensalism?

• Commensalism describes an interaction that benefits both species.

• Commensalism is when one organism eats another organism to obtain nutrients.

• Commensalism is an interaction where one species benefits and the other remains unaffected

What is parasitism?

• Parasitism is a relationship in which both species benefit

• Parasitism is a relationship in which one organism benefits and the other organism is harmed, but not always killed

• Parasitism is an interaction where one species benefits and the other remains unaffected