Chapter 4: Species Interactions and Community Ecology

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

• parasitism
• commensalism
• mutualism

Bacteria fix nitrogen on plant roots. Plant roots provide sugar to bacteria. This is an example of

• mutualism

• parasitism

• commensalism

• competition

• none of these

Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

A tick and a dog have this type of relationship.

• mutualism
• commensalism
• neutralism
• parasitism

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

• Mutualism 
• Competition
• Parasitsm 
• Commensalism 

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

• Mutualsim 
• Parasitism 
• Commensalism 

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 

What type of ecological interaction does the tapeworm have with its host?

• Commensalism
• Mutualism
• Predation
• Parasitism

Whic statement best describes the relationship between species A and B?

• Species A is the prey of Species B
• Species A is a parasite of Species B
• Species A is a consumer and B is a producer
• Species A and B has a mutualistic relationship

Resource partitioning is best described by which of the following statements?

• Competitive exclusion results in the success of the superior species.
• Slight variation in niche allows closely related species to coexist.
• Two species can coevolve and share the same niche.
• Species diversity is maintained by switching between prey species.