Science Showdown Symbiotic Relationships

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

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

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 

Two organisms fighting over resources (food, territory, a mate etc.)

• Mutualism 
• Competition
• Predator/Prey
• Commensalism 

Tags

NGSS.MS-LS2-1

A relationship between two organisms in which one organisms eats the other.

• Mutualism 
• Competition
• Predator/Prey
• Commensalism 

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales

• Mutualsim 
• Parasitism 
• Commensalism 

Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment. 

• Mutualsim 
• Parasitism 
• Commensalism 

Tags

NGSS.MS-LS2-2

Yucca flowers are pollinated by yucca moths. The moths lay their eggs  in the flowers where  the larvae  hatch and eat  some of the developing seeds. Both species benefit.  

• Mutualism 
• Parasitism 
• Commensalism 

Tags

NGSS.MS-LS2-2

Hermit crabs live in shells made and then abandoned by snails. This neither harms nor benefits the snails. 

• Mutualism 
• Parasitism 
• Commensalism 

Oxpeckers feed on the ticks found on rhinoceros. Both species benefit

• Mutualism 
• Parasitism 
• Commensalism