Flow of Energy Unit Test Review

The graph shows the changes in two populations of herbivores in a grassy field.

A probable reason for these changes would be that...

• population  A      competed for

  Food better than population B          .

• population  B

  competed for

  food better than population  A         .

A ___________  is a place where animals obtain food, water, and shelter that are necessary for their existence?

• biosphere

• home

• community

• niche

 Most consumers obtain energy indirectly through _______.

• the energy pyramid

• plants

• soil

• predators

The graphic in the image is an energy pyramid. Most of the energy is transferred from the ______ to the ______ _______.

• producers to the secondary consumers

• producers to the apex predators

• producers; primary consumers

A food web is a combination of ________ _______ that shows how organisms interact to get their required energy and matter. 

• food webs

• primary consumers

• food chains

• energy pyramids

The food chain below shows how energy is passed in a forest environment.

   Sun → acorns → squirrels → snakes → hawks

If the squirrels disappeared from this food chain, the   __________                       would find other small animals to eat. 

• primary consumers

• hawks

• decomposers

 In a forest where hawks and owls both live, the hawks and owls will both  _______    ____ mice.

• mate with

• sing for

• compete for

The picture shows a group of wild rabbits living together near a village in Sydney, Australia.

Which level of organization does this group of rabbits represent?

• a population of living organisms

• a community of nonliving organisms

• an ecosystem of living organisms

• an environment of nonliving organisms

The matter in a food web is __________   as it moves through the food web.

• depleted

• increased

• recycled

• decreased

A deer caught and eaten by a Florida panther is an example of what ecological relationship? 

• parasitism

• commensalism

• predator-prey

• competition