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