Species Interactions and Community Patterns

A relationship between two species where one benefits while the other is harmed.

• Mutualism
• Commensalism
• Parasitism
• Naturalism

A frog eats a fly. The frog and fly are demonstrating ________.

• mutualism
• competition
• predator/prey
• parasitism

A relationship between two organisms in which one organism benefits and the other is unharmed

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

A relationship between two organisms in which both organisms benefit. 

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

The crocodile and bird have a _______________ relationship.  The crocodile benefits by having its teeth cleaned.  The bird benefits by gaining food and protection.  Both animals benefit from this relationship.

• parasitism
• predator and prey
• mutualism
• commensalism

No two species can occupy the same niche

• Competitive Exclusion Principle 
• Limiting Exclusion Theory
• Competitive Limiting Principle
• Limiting Competitive Theory 

What type of species interaction is the following: two bears fighting over the same mate. 

• predation 
• mutualism 
• competition 
• parasitism 

_______ is when 2 or more species live in close association. 

• predation 
• competition 
• symbiosis 
• food web 

Name the species interaction: A decorator crab camouflages itself with sponges. Sponges are unaffected. 

• competition 
• predation
• commensalism
• mutualism 

Evidence shows that some grasses benefit from being grazed. Which of the following terms would best describe this plant-herbivore interaction?

• Mutualism
• Commensalism
• Parasitism
• Competition