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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
survival rate of organisms in an ecosystem based on energy
D
how energy is transferred in ecosystems
2) Which is an example of a keystone species?
A
bobcats, beavers
B
alligators,beavers
C
snakes, bobcats
D
alligators, vultures
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 create habitat for native species.
D
These species can be used to cure diseases in native species.
4) Which represents the symbiotic relationship, mutualism?
A
wrasse fish and red snapper
B
clown-fish and anenome
C
bear and trout
D
tick and deer
5) Which correctly identifies abiotic interactions in aquatic ecosystems?
A
air, soil, sunlight, water, nutrients
B
dead trees, soil, sunlight, water, air
C
organisms, air, soil, sunlight, water, nutrients
D
organisms, dead trees, water, sunlight, soil, grass
6) Which identifies limiting factors in aquatic ecosystems?
A
temperature, insect eggs, sunlight, temperature,pH
B
soil, sunlight, water, DO, temperature
C
insect eggs, water, sunlight, temperature, soil
D
nutrients, sunlight, temperature, DO, insect eggs,pH
7) What causes an algal bloom, eutrophication?
A
excessive phosphorous and carbon
B
excessive nitrogen and carbon
C
excessive oxygen and carbon
D
excessive nitrogen and phosphorous
8) Which describes an organism's range of tolerance?
A
The value at which the population can be sustained.
B
The value at which organisms can tolerate one another before going into a purge.
C
The value at which organisms can reproduce
D
The value at which organisms can survive in changes of their environment
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 enters aquatic ecosystems when species begin to overpopulate and area and causes temperatures to rise.
D
Thermal pollution is a rapid increase in temperature caused by waste discharge from factories.
10) Which describes the differences between threatened, endangered, and extinct species?
A
Threatened species are at risk of becoming endangered. Endangered species are at risk of become extinct.
B
Endangered species are at risk of becoming threatened. Threatened species are at risk of becoming extinct
C
Endangered species are in danger of extinction. Threatened species are at risk of becoming extant.
D
Threatened species are those at risk of becoming extant. Endangered are at risk of becoming threatened.
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
fish
C
agnatha
D
Osteichthyes
13) What is a fish's internal ear called?
A
holes
B
otoliths
C
peep holes
D
pinnea
14) What is the diamond shaped fish scale called?
A
placiod
B
cycloid
C
Ganoid
D
Ctenoid
15) What are the catfish whiskers called?
A
sturgeon
B
tentacles
C
hair
D
barbels
16) What two factors relate to the how the fish lives?
A
head shape and length
B
body shape and fin shape
C
jaw size and speed
D
movement and color
17) Muscle segments along the fish's body are called what?
A
lentic and lotic
B
myomeres
C
statocysts
D
lateral line
18) What is one threat to mountain streams?
A
smog
B
acid rain
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
river with lots of bass and smaller fish
D
wetlands with spongy ground and are made by peat deposits
20) What is the area of natural vegetation along or around bodies of water protecting them from sedimentation?
A
Riparian buffer
B
peat moss
C
hydrophitic plants
D
grass
*select an answer for all questions
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