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WorksheetsFlow of energy & matter
Total questions: 17
Worksheet time: 13mins
Which population of organisms would contain the greatest amount of biomass based on the food chain shown?
Algae
Zooplankton
Perch
Hawk
Which population of organisms would contain the least amount of biomass based on the food chain shown?
Plants
Insects
Lizards
Snakes
Which of the following statements about the biomass of each trophic level is accurate based on the food chain shown?
The plant community has less biomass than the mosquito larvae population.
The population of dragonfly larvae has more biomass than the mosquito larvae population.
The beetle population has a lower biomass than the dragonfly larvae population.
The population of beetles has more biomass than all other trophic levels.
Why are pyramids the shape that is used to depict the relative amounts of biomass at each trophic level?
All of the food is converted into heat at each trophic level
Energy is distributed equally amongst all the trophic levels
Each trophic level supports a smaller amount of biomass
Organisms get larger in each successive trophic level
What vital role do decomposers play in an ecosystem?
Decomposers convert solar energy into chemical energy.
Decomposers recycle nutrients within the ecosystem.
Decomposers compete with herbivores for resources.
Decomposers provide oxygen gas to other consumers.
In the food web shown, the population of which
organisms would contain the lowest amount of biomass?
Hawks
Mice
Corn
Cricket
Which of the following pairs of organisms could both be
classified as omnivores in the food web?
Hawks and lizards
Mice and birds
Moths and crickets
Birds and crickets
If there is 10,000 kJ of energy available in the producer population, how many kilojoules of energy would be found in the carnivore population?
10,000 kJ
1,000 kJ
100 kJ
10kJ
Which level of an ecological pyramid represents the largest biomass?
producer population
herbivore population
carnivore population
all populations are equal
Which organism would most likely be found at the bottom of a biomass pyramid that represented an aquatic ecosystem?
aquatic insects
zooplankton
phytoplankton
whales
Where do the plants in this pyramid get their energy from?
the sun
insects
spiders
decomposers
What percentage of the energy available in the plant population will reach the sparrow population based on the food chain shown?
10%
1%
0.1%
0.01%
If 2500 kilojoules of energy are available in the primary consumer population in a given area, approximately how many kilojoules of energy would be expected in the spider population?
2500 kJ
250 kJ
25 kJ
2.5 kJ
Which population in the food web above would contain the least chemical energy?
Plants
Aphids
Spiders
Sparrows
Which population would be found at the bottom of a biomass pyramid?
Plants
Aphids
Spiders
Sparrows
Which organisms provide energy for secondary consumers?
lion, kite, rabbit
Jackal, goat, mouse
Mouse, rabbit, goat
Snake, kite, wild cat
Coyotes and hawks are in the same trophic level for which of the following reasons?
They both live in similar habitats
They are both members of Class Aves
They both eat primary consumers
They have hunting styles that are similar
