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WorksheetsFood Webs STAAR
Total questions: 25
Worksheet time: 25mins
What does this diagram display?
The predator-prey relationship between vertebrates
The movement of energy throughout an ecosystem
The changing types of organisms in a forest
The standard lifespan of trees and animals
Which of the following is not a secondary consumer?
hawk
lizard
mouse
snake
The rabbit in this food web would be considered a:
Decomposer
Producer
Secondary Consumer
Primary Consumer
How many primary consumers are there in this food web?
1
2
3
4
In this food chain, what will happen if the frogs become extinct?
The snakes will increase.
The grasshoppers will decrease.
The eagles will remain the same.
The grasshoppers will increase.
Name the producers in this food web.
seagull and fish
penguin and crab
phytoplankton and seaweed
seaweed and zooplankton
What may happen if the snowshoe hare was removed from the food web pictured?
The insects in the habitat would increase.
The shrew population would decrease due to being only hawk food source.
The willow tree population would decrease.
Foxes would dies due to no food source.
Which of the following organisms is a carnivore.
greenfly
plant
mouse
buzzard
What might happen if you remove a primary consumer from the ecosystem?
There would be more food for secondary consumers.
The number of primary consumers would increase.
The number of plants would increase.
The number of secondary consumers would increase.
Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?
Frog, Dragon Fly and snake
Frog, trout and dragon fly
Frog, salamander and trout
Frog and phytoplankton
How many herbivores are in this web?
1
2
3
4
Which organisms from the Food Web is consuming the Insects?
Lynx, Hare
Shrew, Red fox
Lynx, Red Fox
Hawk, Shrew
Identify the correct food chain that demonstrates the energy flow of this food web.
Eagle < Bluebird < Plant
Plant< Rabbit < Eagle
Plant > Snail > Lizard > Eagle
Eagle> Lizard>Caterpillar>Plant
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
There would be a decrease in the small bird population.
There would be a decrease in the grass/flowers population.
There would be a decrease in the mice population.
There would be an increase in the grass/flowers population.
The owl receives energy from which organisms?
grasshopper and mouse
mouse and rabbit
rabbit and butterfly
butterfly and frog
What does a Secondary Consumer eat?
Tertiary Consumers
Primary Consumers
Producers
Secondary Consumers
Which of the following best describes a relationship in this grassland?
Badgers are top predators because they eat upland sandpipers and beetles.
A producer-consumer relationship exists between lupines and ants.
A predator-prey relationship exists between beetles and ground squirrels.
Upland sandpipers are primary and secondary consumers because they eat grasses and grasshoppers.
Which statement does NOT describe a relationship shown in the food web?
Elk are prey for mountain lions.
Mice are herbivores that consume grasses and are preyed on by snakes.
Owls prey on rabbits and frogs.
Rabbits consume shrubs and are parasites of grasses.
Which organisms all consume the same producer?
crabs, pilchards, blennies
euphausiids, sweeps, water fleas
tiger sharks, dolphins, octupuses
sea urchins, crabs, octopuses
Which organisms have three carnivorous predators and a consumer-producer relationship with at least one organism?
the organisms that fit in boxes 2, 3 and 7
the organisms that fit in boxes 5 and 7
the organisms that fit in boxes 4 and 6
the organisms that fit in boxes 2 and 7 only
Many Texas caves provide a habitat for animals that live in total darkness. The caves are damp and cool, and most of the caves are rich in mineral calcite. The diagram below shows the relationships of some organisms involved in a cave ecosystem. Based on the diagram, which of the following statements is valid?
Owls are predators of bats, and bats are predators of moths.
Beetles compete with bats and cave spiders.
Snakes prey on bats and owls.
None of the above
What role do decomposers play in a food web?
They produce energy for the ecosystem.
They consume primary consumers.
They break down dead organisms and recycle nutrients.
They are the top predators in the ecosystem.
In a food web, which of the following is a primary producer?
Grass
Rabbit
Fox
Hawk
If a disease drastically reduces the population of a primary consumer in a food web, what is the most likely immediate effect on the primary producers?
Their population will decrease.
Their population will increase.
There will be no change in their population.
They will become secondary consumers.
Which of the following best describes a food web?
A linear sequence of organisms where each is eaten by the next one in the chain.
A complex network of interconnected food chains in an ecosystem.
A diagram showing the number of organisms at each trophic level.
A chart that shows the energy flow in a single direction.
