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Ecosystem Energy REVIEW
Test Description: NC State Standard 8.L.3.1
Instructions: Answer all questions to get your test result.
1) What is the type of relationship where both organisms benefit?
A
parasitism
B
commensalism
C
mutualism
D
predation
2) Some organisms can only live by causing harm to a host organism. What is the name of the organisms?
A
parasites
B
virus
C
bacteriophage
D
flagellum
3) Which one of these illustrates a predator/prey relationships?
A
humans and grilled chicken
B
rabbits and carrots
C
fleas and dogs
D
owl and mouse
4) We know the carbon cycle involves moving carbon around the earth in a cycle. Plants and trees join in the carbon cycle in a couple of ways. Which one will clean carbon out of the air?
A
by transpiration
B
by completing photosynthesis
C
by dying and decomposing into the earth making fossil fuels
D
by absorbing water through their roots
5) Ecosystems are made of biotic and abiotic factors. Which of the following is a biotic factor?
A
water
B
air
C
soil
D
producers
6) An ecosystem is filled of many different organisms that have specific roles to play. What is a niche?
A
an organism's role in the environment
B
a place where an organisms lives
C
all of the populations that live in an area
D
a group of organisms that can produce offspring
7) Which interaction illustrates a terrestrial-aquatic food web relationship?
A
a turtle burying eggs in the sand
B
a bird laying eggs in a nest in a tree
C
a bear eating fish in a river
D
a fish eating plankton in the ocean
8) Which example BEST represents the interconnection between an aquatic food web and a terrestrial food web?
A
mountain lions catch and eat deer
B
a fish eats insects that land on the surface of a pond
C
bats eat mosquitoes
D
snake eats bird eggs
9) Population density of marine life is greater along the shorelines of the ocean than further out in the deep waters. Which statement provides the BEST reason for this situation??
A
coastal waters are less polluted than the deeper waters of the ocean
B
shallow waters have fewer predators
C
there are more nutrients in shallow waters
D
ocean currents prevent many smaller marine life from living in the deep water
10) Which pair of organisms represents a connection between aquatic and terrestrial food webs?
A
whales and plankton
B
humans and coral
C
spiders and mosquitoes
D
seagulls and oysters
11) Which of these organisms is a producer in a marine ecosystem?
A
algae
B
fish
C
gull
D
worm
12) Which BEST determines the number of wolves that can live in an area?
A
the amount of food availabe in the area
B
the amount of snow in the area each year
C
the number of trees in an area
D
the number of birds that can live in the area
13) What happens to a population and competition when there is a reduction in living space?
A
competition decreases and the population decreases
B
the population expands and the competition intensifies
C
competition stregenthens while the population contracts
D
populaiton increases as competition decreases
14) Kudzu vines grow by climbing and wrapping around trees. Trees covered by the vines can die due to lack of sunlight. What type of relationship exists between the trees and the kudzu growing on them?
A
competition
B
parasitism
C
mutualism
D
predation
15) IF wolves prey on deer for food, what will MOST LIKELY happen to the deer if the wolves are removed from an area where the deer live?
A
the population of deer will decrease
B
the deer population will remain the same
C
the population of deer will become extinct
D
the population of deer will increase
16) In a food pyramid, which BEST explains why the number of organisms decreases from one trophic level to the next?
A
consumers are feeding on smaller organisms that have less energy
B
comsumers at the top level require more energy than consumers at the lower levels
C
lower lever consumers require more energy than consumers at the top level
D
consumers are feeding on larger organisms that have less energy
17) Which food provides the MOST energy for the body in the shortest time?
A
fruit
B
potato
C
milk
D
meat
18) Consider this food chain: grass--- grasshopper--- frog--- hawk. Where is the largest amount of energy found in this food chain?
A
sun
B
hawk
C
grass
D
grasshopper
*select an answer for all questions
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