Bio 2 Ecosystems, Energy Conservation Ecology 4/4

1. Matter is cycled through ecosystems, energy is not.

A) True B) False

true

The main reservoir for nitrogen is the atmosphere

A) True B) False

true

Multiple Choice

Which of these ecosystems has the highest net primary productivity per square meter?

A) savanna B) open ocean C) boreal forest D) tropical rain forest E) temperate forest

D) tropical rain forest

In general, the total biomass in a terrestrial ecosystem will be greatest for which trophic level?

A) producers B) herbivores C) primary consumers D) tertiary consumers E) secondary consumers

A) producers

Which of the following areas of study focuses on the exchange of energy, organisms, and materials between ecosystems?

A) population ecology B) organismal ecology C) landscape ecology D) ecosystem ecology E) community ecology

C) landscape ecology

In the long-term, which of these factors is not a major threat to Biodiversity

A. Large scale reclamation of marshlands for housing development

B. Climate change C. The weather D. Excessive use of pesticides

C. The weather

Which of the following would be considered an example of bioremediation?

A) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability

B) using a bulldozer to regrade a strip mine

C) identifying a new biodiversity hot spot

D) reconfiguring the channel of a river

E) adding seeds of a chromium-accumulating plant to soil contaminated by chromium

E) adding seeds of a chromium-accumulating plant to soil contaminated by chromium

Which of the following is an example of an ecosystem?

A) All of the brook trout in a 500 hectare2 river drainage system.

B) The plants, animals, and decomposers that inhabit an alpine meadow.

C) A pond and all of the plant and animal species that live in it.

D) The intricate interactions of the various plant and animal species on a savanna during a drought.

E) Interactions between all of the organisms and their physical environment in a tropical rain forest.

E) Interactions between all of the organisms and their physical environment in a tropical rain forest.

If the Sun were to suddenly stop providing energy to Earth, most ecosystems would vanish. Which of the following ecosystems would likely survive the longest after this hypothetical disaster?

A) tropical rainforest B) tundra C) benthic ocean D) grassland E) desert

C) benthic ocean

The producers in aquatic ecosystems include organisms in which of the following groups?

A) cyanobacteria B) algae C) plants D) photoautotrophs E) A, B, C, and D are all correct

E) A, B, C, and D are all correct

Which of the following organisms is incorrectly paired with its trophic level?

A) cyanobacterium; primary producer

B) grasshopper; primary consumer

C) zooplankton; primary producer

D) eagle; tertiary consumer

E) fungus; detritivore

C) zooplankton; primary producer

Which of the following members of a marine food chain occupies a similar tropic level to a grasshopper in a terrestrial food chain?

A) phytoplankton B) zooplankton C) lobster D) sea lion E) shark

B) zooplankton

___________is an impact that is shared by the following: invasive species and habitat destruction.

A) Increase in number of species B) Increase in food productivity C) Reduction in Ecological footprint D) Loss of Biodiversity

D) Loss of Biodiversity