Exam 24: Aquatic Ecosystems

Inflowing river waters most often impoverish rather than fertilize estuaries.

The general term for flowing bodies of freshwater is ________.

In lakes and ponds,the open-water zone extending to the depth of light penetration is referred to as the ________ zone.

In lakes and ponds,the depth at which respiration balances photosynthesis is referred to as the ________ depth of light.

As a stream or river descends,it generally grows

If a stream has an average depth of 3 meters,an average width of 4 meters,and an average stream velocity of 0.24 m/s,what is the discharge rate or streamflow (Q)?

In the benthic zone of lakes and ponds,organisms that are attached to or move on a submerged substrate but do not penetrate it are referred to as ________.

What is missing from the profundal zone?

Barrier reefs are separated from land by shallow lagoons.

The water above the continental shelf belongs to the ________ province of the pelagic zone.

Phytoplankton thrive in the limnetic zone of lakes and ponds.

Swimming organisms in the ocean that are able to move at will in the water column are referred to as nekton.

Which of the following would have the fastest flow,given the same discharge?

The cells of reef-building corals are inhabited by symbiotic species of

As a stream flows down its course,it generally becomes warmer and slower.

The organisms living on the bottom of the ocean are collectively referred to as

What are present in the photo?

In lakes and ponds,oxygen concentrations are lowest in the

In the ocean,swimming organisms that can move at will in the water column are referred to as

Which order of stream would likely be found at the highest elevation?