• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

Card Range To Study



Play button


Play button




Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

21 Cards in this Set

  • Front
  • Back
What features can be said of marine (saltwater)?
open water
What features can be said about freshwater?
lotic - flowing water (rivers and streams)

lentic - non-flowing water (ponds, lakes, and wetlands)
Name the shallow-water zone of ponds/lakes in which light reaches the bottom.
littoral zone
Name the open water zone of ponds/lakes that extends to the depth of light penetration, habitat of phytoplankton, zooplankton, and nekton.
limnetic zone
Name the open water zone of ponds/lakes that goes beyond the depth of effective life penetration.
profundal zone
Name the bottom region of ponds/lakes that is the primary place of decomposition.
benthic zone
What are organisms living on submerged substrate that do not penetrate the substrate?
When do streams become larger?
Streams become larger on their course to rivers and are joined along the way by many other streams.
What is a first-order stream?
a small headwater stream with no tributaries
What is a second-order stream?
formed when two first-order streams unite
Name the term for drainage basin.
What are formed when rivers flow into the sea?
What are semi-enclosed parts of the coastal ocean where freshwater joins saltwater?
Which organisms have optimum salinity range and are attached to the substrate?
What kind of fish live most of their lives in saltwater and return to freshwater to spawn and are specially adapted to endure changes in salinity?
anadromous fish
What is the term for whole body of water?
What is the term for the bottom region?
Which zone of the ocean is a vertical layer from the surface down to 200 m where photosynthesis occurs?
epipelagic zone/photic zone
Where must autotrophs reside?
Autotrophs are restricted to the upper surface of the water where there is light (photic zone).
What are swimming organisms that feed on zooplankton and pass energy to higher trophic levels?
What are a unique accumulation of dead skeletal material built up by carbonate-secreting organisms?
coral reefs