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