Chapter 8 Aquatic Biodiversity

Which of the following are the two greatest long-term threats to coral reefs?

• ocean acidification and overfishing

• damage by divers and predation

• climate change and acidification

• erosion and sea-level rise

• climate change and predation

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Although they only occupy 0.2% of the ocean floor, coral reefs provide many benefits. Which of the following is not one of these?

• They provide significant free oxygen.

• They serve as natural barriers.

• They protect coastlines from erosion.

• They provide habitats for one-quarter of all marine organisms.

• They provide one-tenth of the global fish catch.

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If you find a new species of algae floating on the surface of a coastal zone, you would likely consider it a type of ____.

• benthos

• zooplankton

• nekton

• phytoplankton

• ultraplankton

A jellyfish would be considered a type of ____.

• benthos

• zooplankton

• nekton

• phytoplankton

• ultraplankton

Oysters, sea stars, and lobsters would be considered what type of organism?

• phytoplankton

• zooplankton

• nekton

• benthos

• decomposers

Strongly swimming consumers are most likely to be ____.

• phytoplankton

• zooplankton

• nekton

• benthos

• decomposers

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The single ocean on the earth is divided into four parts by the continents. Which of the following is not one of those parts?

• Atlantic

• Arctic

• Baltic

• Indian

• Pacific

What prevents coral reefs from surviving below the euphotic zone?

• high water density

• high pressure

• saline water

• inadequate sunlight

• damage from storms

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Which of the following is not part of the saltwater or marine aquatic life zones?

• oceans

• estuaries

• inland wetlands

• coastal wetlands

• mangrove forests

Which of the following is classified as a freshwater aquatic life zone?

• oceans

• mangrove forests

• rivers

• coral reefs

• coastal wetlands