Aquatic Ecosystem Quiz

What does the term "Salinity" refer to?

• The temperature of the water

• The amount of salts dissolved in the water

• The depth of the water

• The amount of sunlight that water can absorb

Where is the Photic zone located in an aquatic ecosystem?

• Below the Benthic zone

• At the very bottom layer of the water

• Above the Aphotic zone

• In the middle layer of the water

Why is photosynthesis unable to occur in the Aphotic zone?

• Because it is too cold

• Because there is too much salinity

• Because no sunlight is able to penetrate this layer

• Because it is too shallow

What characterizes the Benthic Zone?

• It is the warmest layer of the water

• It is the layer where the most sunlight is found

• It is the very bottom layer of the water below the Aphotic zone

• It is the layer where most fish live

Biomes are described in patterns of which two main factors?

• Salinity and depth

• Temperature and precipitation

• Flora and fauna

• Soil type and elevation

Why is it harder to measure certain biomes like the ocean compared to terrestrial biomes?

• Because of the diverse wildlife in the ocean

• Because the ocean is too deep

• Because it's harder to measure a hot summer or parts of a rainy season deep in the ocean

• Because the ocean is always in motion

What are the characterizing factors of aquatic systems?

• Temperature and wildlife

• Water salinity, depth, and whether the water is in still movement or not

• Soil type and air temperature

• Precipitation levels and flora

What is the Littoral Zone?

• The deep water zone where no plants are rooted

• The zone that is flooded with water for part of the year

• The shallow near shore portion in the photic zone with aquatic plant growth above the water's surface

• The zone far from the shore line where no plants are rooted

What characterizes the Limnetic Zone?

• It is the zone nearest to a river's course that becomes flooded periodically

• It is the shallow near shore portion with aquatic plant growth

• It is farther from the shore line where no plants are rooted and is rich in invertebrates due to high nutrients from the littoral zone

• It is an area of land that is flooded with water for part of the year

What are Wetlands?

• Zones far from the shore line with no plant roots

• Areas of land that are flooded with water for part of the year

• The shallow near shore portion with aquatic plant growth

• Areas nearest to a river's course that become flooded periodically