1.3 Aquatic Biomes

Question 1

littoral zone

Answer 1

emergent plants grow along the shoreline, abounds in invertebrates

Question 2

benthic zone

Answer 2

located at the bottom of the water body, often is muddy, rich in detritus and nutrients, and low in oxygen

Question 3

limnetic zone

Answer 3

a layer of open, sunlit water, where photosynthesis takes place, supports phytoplankton and zooplankton

Question 4

profundal zone

Answer 4

sunlight does not reach the deeper profundal zone, lacks photosynthetic life and is lower in dissolved oxygen than the upper waters

Question 5

What fresh aquatic biome are the best in terms of plant productivity, biodiversity, and holding more nutrients?

Answer 5

Marshes and swamps

Question 6

What marine aquatic biome has the highest primary productivity and biodiversity?

Answer 6

Coral reefs and estuaries

Question 7

What are aquatic biomes characterized by?

Answer 7

Salinity, depth, and temperature

Question 8

What happens when organisms die in aquatic biomes?

Answer 8

biomass sinks to the bottom of the ocean where decomposers utilize nutrients

Question 9

What brings nutrients from the depths of the ocean to the surface for phytoplankton?

Answer 9

upwelling

Question 10

Where is there an abundance in nitrogen and phosphorous amounts?

Answer 10

Greater along the coastline as a result of runoff into rivers and eventually estuaries