Aquatic Ecosystems Review

The location where freshwater and saltwater mix at the mouth of a river is known as

• Intertidal Zone

• Productivity Zone

• Euphotic Zone

• Estuary

The photic zone of the ocean extends to about what depth?

• 100 m

• 200 m

• 500 m

• 1000 m

Which is NOT a characteristic of an organism that lives in the intertidal zone?

• Ability to be submerged underwater

• Ability to attach to surface

• Ability to tolerate drying out

• Ability to reproduce quickly

Which of the following describes plankton?

• Drifters, can't swim against current

• Swim freely, independent of current

• Live on, in, or near seafloor or lake bed

• Live on or near the water's surface

Which of the following describes nekton?

• Drifters, can't swim against current

• Swim freely, independent of current

• Live on, in, or near seafloor or lake bed

• Live on or near the water's surface

Which of the following describes benthos?

• Drifters, can't swim against current

• Swim freely, independent of current

• Live on, in, or near seafloor or lake bed

• Live on or near the water's surface

The zone of the ocean where sunlight is able to penetrate the water is known as

• Intertidal zone

• Productivity zone

• Euphotic zone

• Benthic zone

The nutrient-rich area of a pond near the shore is called the

• Benthic zone

• Littoral zone

• Limnetic zone

• Neritic zone

The open and well-lit area of a pond away from the shore is called the

• Benthic zone

• Littoral zone

• Limnetic zone

• Neritic zone

Which of the following is NOT a condition that would be found in an area of high marine productivity?

• Strong thermoclines

• High nutrient levels

• Upwelling

• High numbers of phytoplankton