Week 6.2 Extra Credit

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

• parasitism
• commensalism
• mutualism

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. 

• parasitism
• commensalism
• mutualism

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 

• parasitism
• commensalism
• mutualism

 The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.

• parasitism
• commensalism
• mutualism

Which of the following shows the symbiotic relationship between the Rodent and the Bird?

• Mutualism

• Commensalism

• Competition

Hermit Crabs live in shells made and then abandoned by snails.

• Commensalism

• Parasitism

• Competition

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

• Competition
• Mutualsim
• Predation
• Commensalism

a relationship that occurs when two or more organims of the same species need the same resource at the same time

• competition
• symbiosis
• predation

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