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WorksheetsPrinciples of Ecology
Total questions: 40
Worksheet time: 30mins
Which is the best example of mutualism?
a fish protecting a shrimp, who builds a burrow for the pair to share
a peacock courting and mating with a peahen
a snake administering its toxic venom to a mouse
a crayfish resting under the roots of an aquatic plant
A fish swimming beneath a shark to collect scraps while the shark remains unaffected is an example of
mutualism
commensalism
predation
parasitism
Which is part of Earth’s biogeochemical cycle?
solar radiation traveling to Earth
helium gas escaping into space
an avalanche rumbling down the mountain
carbon from decomposition trapped on the ocean floor
The specific range of land—approximately 4 km2— a place for the jaguar to live is its
Biome
Habitat
Niche
Biosphere
Deep ocean vents, African wildlife, and arctic glaciers are all part of the Earth's
Community
Ecosystem
Biome
Biosphere
What will happen to polar bears if the Earth’s average temperature keeps rising?
Their population will grow
Food will be more plentiful for them
They will become forest-dwellers seeking shade
The ice sheets will melt and they will be unable to obtain food and travel
The algae, insect larvae, protozoans, and other species in a small pond would be an example of a
Community
Biome
Biosphere
Population
Select all that apply: limiting factors on population growth
competitors
disease
weathers
fires
available habitats
What is meant by ecological tolerance?
Two species competing for resources
The sun's effect on global warming
Microbes in the soil breaking down nitrates
The range of environmental conditions that are necessary for survival in a species.
How can detritivores be beneficial to the environment?
provide food for autotrophs
rid waste and dead matter
allow predation to occur
eating excess producers
How is most energy at each level of a pyramid of energy lost?
Gases
Water
Heat
Food
A(n) ________collects energy from sunlight or inorganic substances to produce food.
autotroph
heterotroph
decomposer
detritivore
A fish grazing on ocean algae is an example of a
autotroph
heterotroph
decomposer
detritivore
Study the graph above: what is the optimal range of water temperature for Steelhead Trout?
9℃ - 13℃
13℃ - 21℃
21℃ - 25℃
25℃ - 30℃
Infer the abiotic factors affecting the growth of a palm tree that has sprouted along the shore of a tropical island. Which of the following could be considered abiotic factors?
palm trees
hermit crabs
sea gulls
ocean water
What does the illustration above respresent?
a food pyramid
a food chain
a food web
an energy pyramid
Which organisms in the illustration above are autotrophs?
squirrels
rabbits
foxes
green plants
What process involves the capture and conversion of nitrogen into a form usable by plants in soil?
condensation
phosphatization
nitrification
ammoniazation
What process involves the conversion of water vapor into liquid water?
condensation
evaporation
denitrification
transpiration
What process occurs through plants that makes dew?
condensation
evaporation
precipitation
transpiration
What is the source of all energy on Earth?
the sun
the soil
water
consumers
An organism that eats other heterotrophs
autotroph
detritivore
carnivore
producer
What kind of creature is a dog?
autotroph
detritivore
carnivore
producer
An organism that eats both plants and animals
herbivore
carnivore
autotroph
omnivore
An organism that collects energy from sunlight or nutrients from dark places to produce its own food
herbivore
omnivore
heterotroph
autotroph
An organism that eats fragments of dead matter and returns nutrients to the soil, air and water
autotroph
herbivore
detritivore
omnivore
An organism that gets its energy by consuming other organisms
heterotroph
omnivore
herbivore
autotroph
An organism that eats only plants
autotrophs
heterotrophs
herbivores
onmivores
Select all that apply: important biogeochemical processes that cycle matter
nitrogen fixation
denitrification
photosynthesis
precipitation
cellular respiration
How are these elements converted during photosynthesis? 6CO2 + 6H20
H12C6O22 + 6C
6N + 12C
6O2 + 18H2O
C6H12O6 + 6O2
Describe the flow of energy through a food chain that begins with algae at the lowest level
algae, fish, bird, alligator
algae, bird, alligator, fish
algae, fish, alligator, bird
alligator, fish, bird, algae
What is the independent variable in this graph?
growth
Colpidium
Paramecium
temperature
What is the dependent variable in the graph?
growth
Colpidium
Paramecium
temperature
According to the graph, which protist thrives in cooler temperatures?
Colpidium
Paramecium
neither
both
According to the graph, which protist thrives in warmer temperatures?
neither
both
Colpidium
Paramecium
What is biomass?
the total weight of the biosphere
the mass of organic waste
the total mass of organisms in a given area
the volume of essential nutrient in an area
What is meant by symbiosis?
the symmetry of certain species
the sharing of food
any living arrangement between two different species in the same habitat
the chanting of mating calls at the same time
What is the niche of a certain species?
the functional role that it plays within an ecosystem
a place or area of a habitat
special food preparation required by the species
the relationship it has with another species
What is predation?
the sudden death of a plant
one organism kills and consumes another
the scavenging of meat
habitat sharing
What is meant by cycling of matter?
the destruction of matter
the creation of new matter
the transformation of sun energy into solid masses
the continuous processes of the transformation and migration of matter in nature
