Ecology Review

Check all of the boxes that show examples of biotic factors.

• Rain

• Humans hunting

• Predators

• Wildfire

If there was a wildfire in the forest that destroyed the plant life, what would happen to the herbivore population?

• Herbivores would decrease due to a lack of food

• Herbivores would increase due to an increase of food

• Herbivores would not be affected

• Herbivores would decrease due to an increase in predators

What is a population?

• All the organisms living in an area

• The living and non-living organisms in an area

• A group of the same species living in an area

What is an ecosystem?

• All the organisms living in an area

• A group of the same species living together

• All of the organisms living in an area and the non-living environment around them

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

• parasitism
• commensalism
• mutualism

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

• parasitism
• commensalism
• mutualism

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 

1.  A bee and a flower work together to benefit each other. This is an example of _________________. The bee helps the flower by pollinating it and the flower helps the bee by providing it with nectar. 

• commensal relationship 
• parasitic relationship 
• mutual relationship