Ecosystem Interactions

A bird building their nest in a tree.

• mutualism

• commensalism

• parasitism

Bees and a flower

• mutualism

• commensalism

• parasitism

Orchards that live on branches of trees.

• mutualism

• commensalism

• parasitism

Mistletoe putting its roots into its host tree.

• mutualism

• commensalism

• parasitism

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

What type of symbiosis?  Skunks often live in burrows that have been dug and abandoned by woodchucks.  

• commensalism
• mutualism
• parasitism
• predation

A relationship between two organisms in which both organisms benefit. 

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

How does Symbiosis occur?

• Only between species.

• Only between communities.

• Between different species in a community.

• Between different communities.

How does Symbiosis occur?

• Only between species.

• Only between communities.

• Between different species in a community.

• Between different communities.