Review for 3 week exam MP4

At which trophic level is the most energy in any ecosystem?

• 1st level (producers)

• 2nd level (primary consumers)

• 3rd level (secondary consumers)

• 4th level (tertiary consumers)

What happens to the energy as you move up any food chain?

• It decreases

• It increases

• It stays the same

• It increases, then decreases

How much energy is actually passed on from one trophic level to another?

• 10%

• 90%

• 50%

• 25%

If 5,000 Kcal of energy was available at tropic level 1, how many Kcal would be available to the jaguars?

• 5,000 Kcal

• 500 Kcal

• 50 Kcal

• 175 Kcal

What makes an organism a primary consumer?

• because it eats producers

• because it eats herbivores

• because it eats omnivores

• because it eats carnivores

What makes an organism a secondary consumer?

• because it eats producers

• because it eats herbivores

• because it makes its own food

• because it eats carnivores

Kudzu vines grow by climbing and wrapping around trees. Kudzu covered trees die as they are smothered and bread under the weight of the growing kudzu vine. What type of symbiotic relationship is this

• predation

• parasitism

• mutualism

• commensalism

Many species of birds build their nests in trees, the bird then has a safe place to raise young. What type of symbiotic relationship is this?

• predation

• parasitism

• commensalism

• mutualism

Which statement describes an invasive species?

• a non-native species that moves in and out competes existing species

• a non-native species that remains controlled

• a native species that is higher up on the food chain

• a native species that migrates

Which trophic level has the least number of species in the food chain shown for an ecosystem?

• carrots

• rabbits

• foxes

• lions