Trophic Levels and Food Webs — Unit test Answers

Energy in higher trophic levels is greater than energy at lower trophic levels.

Which of the following statements about entropy is true?a.Entropy increases going from one trophic level to another.b.Increases in entropy lead to reversible processes. c.A system’s work output is limited when changes in entropy do not occur.d.All of the above

For the following organisms, choose the correct order of increasing trophic level.a.fungi, deer, wolf and grassb.fungi, grass, wolf and deerc.grass, deer, wolf and fungid.grass, fungi, wolf and deer

Which of the following human activities most likely resulted in the growth of the North American deer population?a.hunting bisonb.clearing land for farmingc.hunting wolvesd.city building

Which statement describes both a positive impact and a negative impact associated with the effects of nitrogen-enhanced fertilizers?

A large portion of precipitation in the rainforest occurs as a result of _______.a.perspirationb.respirationc.oxidationd.transpiration

Which of the following cycles is crucial to living organisms? a. phosphorus b. water c. carbon d. all of the above Please select the best answer from the choices provided

Both photosynthesis and cellular respiration are part of the carbon cycle. Which statement best compares these two processes?

Which statement describes the relationship between plants, animals, and the carbon cycle?

Energy in an ecosystem flows directly from _______.a.producers to tertiary consumersb.producers to secondary consumersc.tertiary consumers to secondary consumersd.secondary consumers to tertiary consumers

What would most likely happen if there were no condensation stage in the water cycle?

Carbon in the ocean originates from the atmosphere.

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

Entropy is greater at higher trophic levels than at lower levels.

Which of the following would not reduce the carrying capacity of an ecosystem for a particular prey species?a.droughtb.fewer primary producersc.habitat destructiond.fewer predators

The main producers in aquatic environments are _______.a.phytoplanktonb.zooplanktonc.kelpd.fish

The elimination of a predator has no negative impacts on that predator’s prey species.

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

A student wants to learn how plants and animals interact with one another in an ocean habitat. Which of Earth's spheres should the student study the most?

The desert relies on precipitation from weather patterns, while the rainforest can create its own precipitation.