Semester Exam Review Part 2

In your explorations as a marine biologist, you find a new species of algae floating on the surface of a coastal zone. You would most likely classify this species as ________________________

• Nekton

• Benthos

• Phytoplankton

• Zooplankton

Answer explanation

Phytoplanton are plant like microscopic creatures that live in bodies of water. Algae is a phytoplankton.

Out on a fishing boat, a swordfish is caught. You would most likely classify this species as a member of the________________

• Nekton

• Benthos

• Phytoplankton

• Zooplankton

Answer explanation

Nekton are large species of aquatic animals that can propel themselves through the water.

Fish adapted to cool, dark water are found in the zone of lakes called the________________

• Nekton

• Benthos

• Phytoplankton

• Zooplankton

Answer explanation

Benthos are animals adapted to the floor of aquatic environments. Like clams and oysters.

An ecologist would expect a temperate lake to demonstrate overturns in____________________

• every season.

• spring and fall.

• summer and winter.

• spring only

Lake overturns bring nutrients to the ______________________ and oxygen to the _______________.

• bottom, top

• top, bottom

• entirety of the lake, bottom

• bottom, bottom

Answer explanation

If you fish for trout, you would be most likely to find them ___________________________.

• in highly oxygenated water (more than 13 mg/L).

• in poorly oxygenated water (less than 6 mg/L)

• in any type of water.

Which of the following are uses of wetlands? (Check all that apply)

• habitat for fish, waterfowl and other wildlife.

• purify polluted waters

• check the destructive power of storms

• sources of freshwater fish.

• recreational opportunities

7. Only about _____% of the world's total water supply exists as uncontaminated fresh water on or close to the surface and is readily available for human use.

• 77%

• 97%

• 3%

• 23%

What is cloud seeding?

• the planting of seeds into clouds.

• a theoretical method of weather manipulation.

• the dropping of crystals into clouds to cause rain.

Answer explanation

People have often settled on floodplains because

• the land is close to water and flat which makes it easier to build.

• the land is fertile for farming, close to water and flat which makes it easier to build.

• the land is close to water.