Symbiotic Relationships

Two organisms both benefit from the relationship

• Commensalism

• Mutualism

• Parasitism

Birds eat the flies off of a rhino's back in the savannah

• commensalism

• Mutualism

• parasitism

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

• commensalism
• parasitism
• mutualism

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

• commensalism
• parasitisim
• mutualism

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

• commensalism
• parasitism
• mutualism

A flea feeds on a mouse's blood to the mouse's detriment.

• commensalism
• parasitism
• mutualism

Ticks feed on deer blood to the deer's detriment.

• commensalism
• parasitism
• mutualism

Honey guide birds alerts and directs badgers to bee hives. The badgers then expose the hives and feed on the honey first. Then the honey guide bird eats. Both species benefit.

• mutualism
• commensalism
• parasitim

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

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

In a mutual relationship, both organisms are ________________. 

• hurt
• not effected
• harmed
• benefiting