Review 7

What is the primary source of all energy in an ecosystem?

• Plants

• Producers

• Fungus and bacteria

• The sun

An example of a symbiotic relationship is found between the clown fish and the sea anemone. The sea anemone provides protection for the fish and the fish provides food for the sea anemone. What category best describes this relationship?

• Mutualism

• Commensalisms

• Parasitisms

• Predator/prey

Which of the following are all examples of abiotic parts of an environment?

• water, food, and a population

• water, soil, and temperature

• trees, hills, and rivers

• algae, fish, and bears

If there was a change in the population of field mouse in the food web above, which of the following may occur?

• Only the fox population would increase.

• There would be a decrease in decomposers, but other organisms would remain unaffected.

• The woodpecker population would be unaffected.

• All organisms within the food web above would be impacted to some degree.

What type of ecological relationship exists between the aphids and the clover bush?

• Mutualism

• Parasitism

• Commensalism

• Predation

A team of marine scientists is studying biotic and abiotic factors that affect the stability of a deep-sea ecosystem. The scientists discovered a species of fish that eats other fish and decaying matter. Which of these does not describe the newly discovered fish?

• Consumer

• Predator

• Scavenger

• Producer

Which of the following symbiotic relationships is considered parasitic?

• Tapeworm eating all of the nutrients in the intestinal tract.

• Pilot fish swimming under sharks.

• Bees transporting pollen from flowers.

• Birds eating the insects from the back of a hippopotamus.

After studying the food web, the student concluded that energy for the food web came from the kit fox and the golden eagle because those organisms are able to move faster than the other organisms. Which statement BEST evaluates the student's conclusion?

• Student is incorrect because the initial source of energy for the food web is the Sun.

• The student is incorrect because the producers are the initial source of energy for the food web.

• The student is correct because the speed of an organism determines whether or not it can catch its food.

• The student is correct because the kit fox and the golden eagle get energy directly from the Sun.

The diagram shows a food web. What would MOST LIKELY happen if gazelles were removed from this ecosystem?

• A. The populations of lions and zebras would increase.

• B. The populations of lions and zebras would decrease.

• C. The populations of hyenas and grasses would increase.

• D. The populations of zebras and grasses would decrease.

In what symbiotic relationship does one living thing benefit while the other is not affected?

• mutualism

• camouflage

• ecosystem

• commensalism