Marine Interactions

What type of relationship is shown here

• Commensalism
• Predation
• Parasitism
• Mutualism 

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

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

Barnacles create home sites by attaching themselves to whales.  The whale is unaffected.  

• commensalism
• mutualism
• predation
• laziness

Honey guide birds alert and direct badgers to bee hives.  The badgers then expose the hives and feed on the honey first.  Then the honey guide birds eat.  

• mutualism
• commensalism
• predation
• competition

A cuckoo may lay its eggs in a warbler's nest.  The cuckoo's young will displace (or move) the warbler's young and will be raised by the warbler.  

• Parasitism
• Commensalism
• Predation
• Competition

Ostriches and Gazelles feed next to each other.  They both watch for predators and alert each other to danger.  Since the visual abilities of the two species are different, they can each identify threats the other animal would not as readily see.  

• Parasitism
• Commensalism
•  Mutualism 
• Competition.  

A bird makes a nest in a tree.  The bird gets a house, but the tree is unharmed.

• commensalism
• mutualism
• Parasitism
• predation

A squirrel hides his acorns from the chipmunks for the winter.

• commensalism
• parasitism
• competition
• mutualism

A bear eats fish out of the river.

• mutualism
• parasitism
• predator / prey
• host / parasite

In the relationship between a lion and a gazelle, who is the prey?

• Gazelle
• lion
• grass
• none