Biomes & Aquatic Ecosystems

Day-to-day conditions in Earth’s atmosphere, such as “sunny and humid,” describe

• climate

• climatograph

• weather

• biome

Which biome would have the highest net primary production?

• savanna

• boreal forest

• coral reefs

• desert

In aquatic ecosystems, net primary productivity is related to

• whether the water is fresh water or saltwater.

• the speed at which the water moves.

• available sunlight and nutrients.

• waves and tides.

In the graph, the solid line represents precipitation and the dashed line represents temperature. What type of conditions are indicated by the areas of the graph labeled A?

• hot

• moist

• dry

• freezing

What percentage of Earth’s surface is covered in water?

• 75 percent

• 90 percent

• 25 percent

• 50 percent

Which of the following describes the aphotic zone in an aquatic ecosystem?

• the very bottom of a body of water

• the zone where no sunlight penetrates and photosynthesis cannot occur

• the shallow, near-shore zone

• the uppermost layer where there is enough sunlight for photosynthesis

Which zone of an aquatic ecosystem tends to have more life—both producers and consumers?

• aphotic zone

• photic zone

• benthic zone

• All have roughly the same amounts of life.

Which ecosystems are considered standing freshwater ecosystems?

• lakes

• wetlands

• ponds

• all of the above

A bog is a wetland that

• is entirely covered with thick, floating mats of vegetation.

• has shallow water and tall, grasslike plants.

• has shallow water and woody shrubs and trees.

• has mostly salt water.

What ocean zone begins at the edge of the continental shelf and then extends outward into deeper water?

• intertidal

• open ocean

• littoral

• neritic