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NC Envirothon Aquatics Review 1
Test Description: Symbiosis in aquatic ecosystems, limiting factors, algal blooms, range of tolerance, indicator species, fish classifications, fish anatomy, wetlands, pollution
Instructions: Answer all questions to get your test result.
1) What does a trophic level describe?
A
the feeding level in a food chain
B
predator prey relationships
C
how energy is transferred in ecosystems
D
survival rate of organisms in an ecosystem based on energy
2) Which is an example of a keystone species?
A
alligators,beavers
B
alligators, vultures
C
bobcats, beavers
D
snakes, bobcats
3) Which best describes the impact of invasive species?
A
These species have no natural predators and out compete native species.
B
These species can be used to cure diseases in native species.
C
These species add energy to ecosystems that can be used by native species.
D
These species create habitat for native species.
4) Which represents the symbiotic relationship, mutualism?
A
tick and deer
B
bear and trout
C
clown-fish and anenome
D
wrasse fish and red snapper
5) Which correctly identifies abiotic interactions in aquatic ecosystems?
A
organisms, air, soil, sunlight, water, nutrients
B
dead trees, soil, sunlight, water, air
C
organisms, dead trees, water, sunlight, soil, grass
D
air, soil, sunlight, water, nutrients
6) Which identifies limiting factors in aquatic ecosystems?
A
nutrients, sunlight, temperature, DO, insect eggs,pH
B
soil, sunlight, water, DO, temperature
C
temperature, insect eggs, sunlight, temperature,pH
D
insect eggs, water, sunlight, temperature, soil
7) What causes an algal bloom, eutrophication?
A
excessive oxygen and carbon
B
excessive phosphorous and carbon
C
excessive nitrogen and phosphorous
D
excessive nitrogen and carbon
8) Which describes an organism's range of tolerance?
A
The value at which organisms can survive in changes of their environment
B
The value at which organisms can tolerate one another before going into a purge.
C
The value at which the population can be sustained.
D
The value at which organisms can reproduce
9) Which describes the cause and effect relationship between thermal pollution and aquatic ecosystems?
A
Thermal pollution enters aquatic ecosystems from sunlight and causes temperatures and dissolved oxygen levels to rise.
B
Thermal pollution is a rapid increase in temperature caused by excessive nitrates in the water.
C
Thermal pollution is a rapid increase in temperature caused by waste discharge from factories.
D
Thermal pollution enters aquatic ecosystems when species begin to overpopulate and area and causes temperatures to rise.
10) Which describes the differences between threatened, endangered, and extinct species?
A
Endangered species are at risk of becoming threatened. Threatened species are at risk of becoming extinct
B
Threatened species are those at risk of becoming extant. Endangered are at risk of becoming threatened.
C
Threatened species are at risk of becoming endangered. Endangered species are at risk of become extinct.
D
Endangered species are in danger of extinction. Threatened species are at risk of becoming extant.
11) What type of species provide clues to help scientists determine problems in an environment?
A
Indicator Species
B
Large Mammals
C
Macro Invertebrates
D
Trees
12) What is the most common classification of fish?
A
Osteichthyes
B
Chondrichthyes
C
fish
D
agnatha
13) What is a fish's internal ear called?
A
peep holes
B
otoliths
C
pinnea
D
holes
14) What is the diamond shaped fish scale called?
A
Ganoid
B
Ctenoid
C
cycloid
D
placiod
15) What are the catfish whiskers called?
A
barbels
B
hair
C
sturgeon
D
tentacles
16) What two factors relate to the how the fish lives?
A
movement and color
B
body shape and fin shape
C
jaw size and speed
D
head shape and length
17) Muscle segments along the fish's body are called what?
A
myomeres
B
lateral line
C
statocysts
D
lentic and lotic
18) What is one threat to mountain streams?
A
acid rain
B
smog
C
peat moss
D
ph level below 5
19) Poccosins are described as what?
A
swampy with lots of reptilians
B
dry lands with a lot of sands and desert vegetation
C
wetlands with spongy ground and are made by peat deposits
D
river with lots of bass and smaller fish
20) What is the area of natural vegetation along or around bodies of water protecting them from sedimentation?
A
Riparian buffer
B
grass
C
hydrophitic plants
D
peat moss
*select an answer for all questions
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