Ecology remediation I

The population of mice in a local forest ecosystem has recently died out due to disease. These mice made up much of the diet of the forest fox. What is the best prediction about what will happen to the foxes?

• The drop in the mouse population will lead to a drop in the fox population.

• The drop in the mouse population will lead to no change in the fox population.

• The drop in the mouse population will lead to an increase in the fox population.

• The increase in the mouse population will lead to an increase in the fox population.

Based on the chart identify which of these events would affect the Georgia Black Bear population the MOST.

• damming rivers and lakes

• introduction of the bald eagle

• large scale forest fires

• unable to tell from answer given

Viruses are not considered to be living things, but they depend upon living cells for energy, reproduction, and protection at the expense of the cells that they invade.

The type of relationship described could best be classified as one of

• commensalism

• mutualism

• parasitism

• resignation

Clownfish have evolved resistance to the deadly stings of sea anemones. The sea anemone provides protection for the clownfish from predators and leaves the uneaten remains of its prey for the clownfish to finish off. Meanwhile the clownfish helps attract prey to the sea anemone with its bright colors.

The relationship between clownfish and sea anemones is a form of symbiosis called

• mutualism

• predation

• competition

• commensalism

Bears and coyotes both consume large plant-eating mammals such as deer. When the deer are in short supply, bears and coyotes may fight over the prey. This type of biological interaction is called

• commensalism

• competition

• mutualism

• rumination

In the food web the amount of matter

• remains unstable

• remains constant

• is all converted to heat

• increases with each trophic level

In the ecological pyramid, the amount of potential food available for each trophic level

• remains the same

• increases over time

• decreases from bottom to top

• increases from bottom to top

In any food web, the organisms that are responsible for converting raw energy into usable chemical energy are collectively called ________, while organisms that recycle the nutrients trapped in dead organisms are collectively called ________.

• producers, consumers

• producers, decomposers

• heterotrophs, consumers

• heterotrophs, autotrophs

Beginning with the producer, which represents the correct order in a typical food chain?

• grass-rabbit-fox-mountain lion

• mountain lion-fox-rabbit-grass

• grass-fox-rabbit-mountain lion

• rabbit-fox-mountain lion-grass

All energy in any ecosystem starts as

• carbohydrates

• electricity

• sunlight

• water