NC Envirothon Aquatics Review 1 Question Preview (ID: 36426)


Symbiosis In Aquatic Ecosystems, Limiting Factors, Algal Blooms, Range Of Tolerance, Indicator Species, Fish Classifications, Fish Anatomy, Wetlands, Pollution. TEACHERS: click here for quick copy question ID numbers.

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

Which is an example of a keystone species?
a) bobcats, beavers
b) alligators,beavers
c) snakes, bobcats
d) alligators, vultures

Which best describes the impact of invasive species?
a) These species create habitat for native species.
b) These species have no natural predators and out compete native species.
c) These species add energy to ecosystems that can be used by native species.
d) These species can be used to cure diseases in native species.

Which represents the symbiotic relationship, mutualism?
a) clown-fish and anenome
b) tick and deer
c) bear and trout
d) wrasse fish and red snapper

Which correctly identifies abiotic interactions in aquatic ecosystems?
a) organisms, dead trees, water, sunlight, soil, grass
b) dead trees, soil, sunlight, water, air
c) air, soil, sunlight, water, nutrients
d) organisms, air, soil, sunlight, water, nutrients

Which identifies limiting factors in aquatic ecosystems?
a) nutrients, sunlight, temperature, DO, insect eggs,pH
b) insect eggs, water, sunlight, temperature, soil
c) soil, sunlight, water, DO, temperature
d) temperature, insect eggs, sunlight, temperature,pH

What causes an algal bloom, eutrophication?
a) excessive oxygen and carbon
b) excessive phosphorous and carbon
c) excessive nitrogen and carbon
d) excessive nitrogen and phosphorous

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 survive in changes of their environment
c) The value at which organisms can reproduce
d) The value at which organisms can tolerate one another before going into a purge.

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.

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) Threatened species are those at risk of becoming extant. Endangered are at risk of becoming threatened.
d) Endangered species are in danger of extinction. Threatened species are at risk of becoming extant.

What type of species provide clues to help scientists determine problems in an environment?
a) Trees
b) Indicator Species
c) Macro Invertebrates
d) Large Mammals

What is the most common classification of fish?
a) agnatha
b) fish
c) Osteichthyes
d) Chondrichthyes

What is a fish's internal ear called?
a) otoliths
b) peep holes
c) holes
d) pinnea

What is the diamond shaped fish scale called?
a) Ganoid
b) Ctenoid
c) cycloid
d) placiod

What are the catfish whiskers called?
a) tentacles
b) barbels
c) hair
d) sturgeon

What two factors relate to the how the fish lives?
a) body shape and fin shape
b) head shape and length
c) jaw size and speed
d) movement and color

Muscle segments along the fish's body are called what?
a) myomeres
b) lateral line
c) lentic and lotic
d) statocysts

What is one threat to mountain streams?
a) acid rain
b) smog
c) ph level below 5
d) peat moss

Poccosins are described as what?
a) wetlands with spongy ground and are made by peat deposits
b) dry lands with a lot of sands and desert vegetation
c) swampy with lots of reptilians
d) river with lots of bass and smaller fish

What is the area of natural vegetation along or around bodies of water protecting them from sedimentation?
a) Riparian buffer
b) hydrophitic plants
c) peat moss
d) grass

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