Exam 17: Communities And Ecosystems

Match the trophic category to the correct description. -a zebra grazing on savanna grass

Which is formed from the carbon shells of marine organisms?  

Which is a factor in determining which plant type becomes the pioneer species in a primary succession event?  

Match the type of species interaction to the correct description. -A wolf and a fox live in the same community.The primary prey for both of them are rabbits.

Nitrogen gas is first converted into _____ by certain_____ before it enters the land nitrogen cycle.

In a natural community,the primary consumers are ____.

Match the trophic category to the correct description. -spotted owls eating mice

Which item would be most attractive to a fire ant?  

The interaction in which one species benefits and the second species is neither harmed nor benefited is ____.

Commensalism is a type of ____.

Where is most of the Earth's phosphate found?  

The plants and animals present in a region from which the trees were removed ten years earlier represent ____.

Phorid flies lay their eggs inside the bodies of various insects and spiders.When the larvae hatch they consume the body of the 'host' from the inside out.The phorid fly is an example of a ____.

Match the type of species interaction to the correct description. -Some plants live in association with bacteria that can fix nitrogen.The nitrogen from the bacteria is shared with the plant and the bacteria receive carbohydrates from the plant.

The nitrogen cycle on land begins with ____.

In a typical predator-prey relationship,____.

A community refers to ____.

Match the trophic category to the correct description. -an earthworm

Two species of closely related squirrels both feed on acorns produced by oak trees.One species feeds exclusively near the top of the tree and the other feeds exclusively towards the bottom of the tree.This is an example of ____.

Resource partitioning is the result of ____.