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Chapter 8: Aquatic Biomes Flashcards | StudBud
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Chapter 8: Aquatic Biomes
Chapter 8: Aquatic Biomes
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1
Why do lakes near glaciers and mountains have clear water?
none of the above
A and B
little sediment
not many small phytoplankton
2
Cloudiness that results from nutrient overload is reffered to as...
benthos
marine fog
photic
turbidity
3
Eutrophication occurs__while cultural eutrophication occurs __.
because of humans;naturally
B and C
naturally;because of humans
because there are little nutrient;naturally
4
Coral reefs are the marine equivalent of what terrestrial biome?
tundra
desert
savanna
tropical rainforest
5
Which plankton is responsible 70% of the primary productivity near the ocean surface?
ultra plankton
phytoplankton
all of the above
zooplankton
6
What percentage of phosphate is point source accountable for?
80%
100%
60%
10%
7
All of the following are characteristics of low primary productivity EXCEPT?
high levels of O2
low level of nutrients & oligotrophic lake
clear water & low population of phytoplankton
A and B
8
Which of the following is a way in which coral reefs provide ecological/economic services?
act as barriers for erosion of land near the shore
help moderate atmospheric temperatures by removing CO2
all of the above
support important fishing and tourism industries
9
Saltwater covers about what percentage of the earth's surface?
27%
83%
71%
52%
10
Which open sea vertical zone contains phytoplankton and high O
2
levels?
abyssal
none of the above
bathyl
euphotic
11
Who/what is increasingly threatening the biological diversity and ecosystem?
all humans
Margarita
monkeys
trash (besides margarita)
12
Plankton can be divided into which of the following?
zooplankton
phytoplankton
ultraplankton
all of the above
13
How does surface water become runoff?
all of the above
none of the above
if snow doesn't evaporte or sink into the ground
if rain doesn't evaporate or sink into the ground
14
Why are Mangrove Forests important ecological systems?
provide ecological/ economic services
they are closest to shore so they act as filter
a and c
they are not important because of low biodiversity
15
The aquatic equivalents of biomes are called?
aquatic life zones
aquatic sectors
marine zones
marine biomes
16
What would happen to aquatic food chain if plankton were removed?
no change
food chain would prosper
aquatic food chain would fall apart
the food chain would quickly recover
17
Lakes are filled when...
runoff
all of the above
precipitation
groundwater
18
Humans are disrupting which of the following ecosystems?
shorelines
All of the above
mangrove forests
coral reefs
19
Estuaries are where what bodies of water met?
none of the above
rivers and lakes
streams and lakes
rivers and sea
20
List the layers of the deep lakes (top--> bottom)
benthic->profundal->limnetic-.littoral
littoral->profundal->benthic->limnetic
lettoral->limnetic->profundal->benthic
littoral->profundal->limnetic->benthic
21
How does Chesapeake Bay receive its waste?
rivers and streams
point
all of the above
nonpoint
22
How do streams shape land they pass?
they do not shape land
by degrading the land
they flow downhill and create friction with land they pass
none of the above
23
Why had commercial harvests populations declined?
overfishing
A & C
pollution
deforestation
24
Freshwater life zones include _&_. These freshwater systems include lakes,streams, and rivers?
standing (lentic); flowing (lotic)
A&B
flowing (lotic); standing (lentic)
neither of the above
25
What is the largest estuary in the world?
Hudson Bay
Indian River
Chesapeake Bay
Pacific Ocean
26
Oligotrophic lakes tend to have what type of characteristics?
shallow and steep banks
deep and steep banks
deep and wide banks
shallow and wide banks
27
Which of the following are major threats from human activities?
pollution/degradation of coastal wetlands & estuaries
All of the above
overfishing
None of the above
28
Why is it that most marine life populates the top layer of the ocean?
top is where most resources are found
top layer isn't the most populated
top layer is where all marine animals mate
top layer is largest in size
29
What organization provided the 1st comprehensive map of effects of different human activities?
USFS (U.S. Forest Service)
NCEAS (National Center for Ecological Analysis & Synthesis)
WTO (World Trade Organization)
CDC (Center for Disease Control)
30
Why was the Chesapeake Bay Program started?
to manage salinity
to manage ph
deforestation
major water pollution
31
Why should humans care for/ take action against degradation of coral reefs?
hold some of the world's greatest biodiversity
all of the above
constant sites of tourism which helps economy
removal CO2 from atmosphere
32
What makes life in coastal wetlands harsh for the organisms that inhabit them?
the areas are too large too inhabit
Must be able to withstand constant changes
there;s too much competition amongst organisms
there tend to be more predators in these areas
33
The open sea can be divided into which of the following vertical zones?
a and b
abyssal
coastal
euphotic
34
Why is the open sea the largest contributor of NPP
some upwellings bring nutrients from bottom to the surface
largest biodiversity
both a and b
covers up so much of Earth's surface
35
Benthos consists of all of the following organisms EXCEPT...
oysters
clams
worms
fish
36
Why is it that some organisms found in bathyl zone will migrate to feed on surface?
To ensure they don't use all the food in their zone
it is not bathal organisms that migrate, it's euphotic
both a and c
ther's a higher abundance of food available
37
The area of shoreline between low and high tides is called...
open sea
coastal zone
abyssal zone
intertidal zone
38
What kind of feedback loop is runoff of nutrients into lakes? why?
negative feedback loop;algae decrease
positive feedback loop;algae decrease
positive feedback loop;algae increase
negative feedback loop;algae increase
39
What is the difference between eutrophic and oligotrophic lakes?
eutrophic has many nutrients&oligotrophic has few nutrients
eutrophic is murky & oligotrophic is clear
eutrophic has few nutrients&oligotrophic has many nutrients
A and C
40
The global ocean can be divided into which of the following?
Arctic
Pacific
Atlantic
All of the above
