REVIEW - 5th Reporting Period Exam

If a prey population rises, how will the predator population be affected?

• The predator population will remain stabe.

• The predator population will rise with it.

• The predator population will fall.

• The predator population will fluctuate randomly.

Which of the following is NOT a biotic factor?

• Coyote

• air

• elephant

If additional snakes are introduced into this ecosystem, there will most likely be an immediate decrease in the _________.  

• hawk population
• rabbit population
• wildflower population
• grass population

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Red-billed oxpeckers feed on parasites found on an Impala. The impala gets rid of parasites and the red-billed oxpeckers get yummy dinner. This is an example of _______.

• commensalism

• mutualism

• neutralism

• competition

Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment (harm).

• Mutualsim

• Parasitism

• Commensalism

A wrasse fish feeds on the parasites found on the black sea bass's body. Both species benefit.

• Mutualism

• Parasitism

• Commensalism

Which abiotic factor is phytoplankton most likely to compete for in a marine environment?

• Sunlight

• Fish

• Rocks

What does biodiversity mean?

• Only one species in an area.
• The different amount of species in an area
• All abiotic life
• Nitrogen fixation

Which process is responsible for carrying fertilizers that have been applied to crops into bodies of water, such as a river?

• Runoff
• Evaporation
• Ocean Currents
• Tectonic Plate movement