Ch 12 Review Part 2

Two male Giraffes are fighting over the last green leaf of a tree that is dying.  

• Competition
• Mutualsim
• Predation
• Commensalism

In a parasitic relationship, one organism is ___________ and one organism is benefiting. 

• helped
• harmed
• not effected
• happy

In a mutual relationship, both organisms are ________________. 

• hurt
• not effected
• harmed
• benefiting 

Commensalism is where one organism is benefiting and the other organism is _____________________. 

• not effected
• helped
• harmed
• hurt

Which interaction benefits both organisms?

• A flea living on a dog
• A bee pollinating a flower
• A tapeworm living inside an animal
• A mosquito biting a person

Tapeworms live in the intestines of dogs and absorb nutrients from food the dog eats. Which best describes the outcome of this relationship?

• The dog and tapeworm both become ill. 
• The dog becomes ill, and the tapeworm benefits. 
• The tapeworm and dog helpe ach other survive. 
• The tapeworm helps the dog survive. 

A mite lives in the base of the eyelashes of people who use mascara. It feeds on the mascara; it does not seem to harm people. What type of symbiotic relationship is this?

• mutualism
• commensalism
• parasitism
• predation

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