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WorksheetsEcology Review
Total questions: 32
Worksheet time: 16mins
Which two key factors determine the
climate of a biome?
organism types and bodies of water
soil type and day length
temperature and precipitation
biodiversity and habitats
Vultures are opportunistic predators which
means that they often feed on carrion
(dead organisms), garbage, or steal food
from smaller animals. Which of the
following terms describes the role of
vultures in the ecosystem?
habitat
niche
producer
community
Which of the following BEST represents a population?
all the racoons in the forest
all the plants in the forest
all the predators in the forest
all the organisms in a forest
How do animals get the carbon, nitrogen, and phosphorus we need in our cells?
from rocks
through decomposition
from the atmosphere
by eating other organisms
Which organisms are the nitrogen-fixers that make nitrogen available for all the other organisms in an ecosystem?
fungus
bacteria
plants
animals
Which of the following statements about ecosystems is TRUE?
An ecosytem includes the biotic and abiotic factors in an area.
An ecosystem is made of only the nonliving parts of the environment.
Many ecosystems in the same region build a community.
An ecosytem only includes one species.
Wolves and mountain lions both feed on the same types of organisms and live in the same general areas. Which type of relationship are wolves and mountain lions MOST LIKELY to have?
commensalism
competition
mutualism
parasitism
Which of the following is NOT recycled in an ecosystem?
nitrogen
carbon
oxygen
energy
How do decomposers benefit the environment?
by returning nutrients to the soil
by making energy from sunlight
by removing extra nutrients from the soil
by removing predators from the ecosystem
Which process returns the nutrients in the bodies of all living things to the environment?
decomposition
cellular respiration
photosynthesis
precipitation
Which of the following is a biotic factor that would affect a trout population in a stream?
sunlight
water temperature
water level
predators
Which process will occur to establish a new community after a forest fire?
primary succession
secondary succession
transpiration
soil formation
Which of the following is an example of primary succession?
grasses growing after a forest fire
the disruption of a climax community by a tornado
lichens growing on rocks after a volcanic eruption
oak trees replacing pine trees in a forest
What is a plant’s role in the carbon cycle?
Plants take in oxygen and release solid carbon.
Plants use carbon dioxide to make proteins.
Plants take in carbon dioxide and pass it on to animals.
Plants take in carbon dioxide produced by other organisms.
A mountain ridge was excavated by a mining company. All the vegetation and soil was removed from the area. Which of the following sequences is MOST likely once the mining ends?
grasses --> shrubs --> trees --> lichens
shrubs -->lichens --> grasses --> Trees
lichens --> grasses --> shrubs --> trees
trees --> shrubs --> grasses --> lichens
What type of tropism do morning glories display when they wrap around a fence as they grow?
geotropism
hydrotropism
thigmotropism
phototropism
A forest habitat has been destroyed by lava flow. After a while, new organisms begin to inhabit the area. What are the first organisms to move into the area called?
decomposers
consumers
predators
pioneer species
Coral live near the ocean surface in some warm regions of the world. The corals provide a home for algae. The algae, in turn, produce food that is used by the corals. What type of relationship do these organisms demonstrate?
parasitism
commensalism
mutualism
competition
Which two biomes have the LEAST amount of precipitation?
tundra and desert
grassland and temperate forest
rain forest and grassland
taiga and tundra
Which processes return carbon to the atmosphere?
photosynthesis and cellular respiration
evaporation and precipitation
photosynthesis and transpiration
cellular respiration and combustion
What happens to the total amount of energy as it passes from one organism to another in a food chain?
it decreases
it increases
it remains the same
energy does pass from one organism to another only nutrients
Use the graph above - Which type of population is experiencing exponential growth?
Species A
Species B
Species C
Use the graph above - What is the carrying capacity of Species A?
10 beetles/m2
5 beetles/m2
20 beetles/m2
Which factor might affect or limit the population size of these bettle species in the graph above
food availability
predators
number of habitats
All of the above
Use the diagram - Which organisim is an omnivore.
rabbit
goat
mouse
snake
Use the diagram - Which organism has the most diverse or varied diet?
Jackal
goat
Rabbit
Mountain Lion
Use the diagram - What is the purpose of the arrows in the diagram?
to give organisms direction
to show energy flow
to show migration movement
to construct the food chain
Use the diagram - Give an example of a food chain with 5 trophic levels.
A) Shrub --> Grasshopper --> Mouse --> Snake --> Eagle
B) Shrub --> Rabbit --> Mouse --> Lynx --> Lion
C) Shrub --> Grasshopper --> Mouse --> Lynx --> Lion
Both A and C
Both B and C
Food Chains:
A) Shrub --> Grasshopper --> Mouse --> Snake --> Eagle
B) Shrub --> Grasshopper --> Mouse --> Lynx --> Lion
Use the food chains listed above- Which organism is a secondary consumer?
Snake
Grasshopper
Lynx
mouse
Use the diagram - If the owl population was wiped out by a deadly virus, which populations would experience growth?
A) Mouse
B) Rabbit
C) Lynx
Both A and B
What 3 abiotic factors are necessary for photosynthesis to occur?
Sun, Water, Carbon Dioxide
Glucose, Oxygen, Water
Carbon Dioxide, Glucose, Water
Sun, Water, Glucose
A certain tropical tree has a fruit that is eaten by only one species of bats. As the bats digest the fruit, the seeds are made ready to sprout. Determine the type of relationship these bats and trees share.
commensalism
mutualism
competition
parasitism
