Trophic Levels and Food Webs Answers

All animals are _______.a.producersb.omnivoresc.herbivoresd.consumers

If a predator is eliminated from an ecosystem its prey’s population will likely _______.a.increaseb.decreasec.stay the samed.change, but the direction cannot be predicted

Which is not an advantage of using the Pyramid of Energy?a.It takes into account the rate of production over a period of time.b.Assigning the decomposers and detritivores to a particular trophic level.c.There are no inverted pyramids.d.The input of solar energy can be added.

It is advantageous for a predator to prey exclusively on a single prey species.

Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers.

Which organism gathers its energy directly from the sun?

A quaternary consumer species would be expected to have a smaller population than a secondary consumer species.

Which of the following is an autotroph?a.mushroomb.treec.deerd.wolf

Organisms produce their own energy or provide energy for other organisms in a food chain. Many different organisms can be found in the Amazon rainforest in South America. Organisms in this biome include a variety of trees, plants, insects, fish, birds, reptiles, and mammals. The jaguar and anaconda are among the largest predators found in the Amazon. Photo by Trisha M. Shears Photo by US Fish and Wildlife Service Which trophic level do anacondas and jaguars fill in the Amazon rainforest?

Energy flow in an ecosystem is best represented by _______.a.the predator/prey relationshipb.food chainsc.food websd.autotrophs