WorksheetsOL Food Webs Review
Total questions: 20
Worksheet time: 14mins
What is the ultimate source of energy for all living organisms in an ecosystem?
Plants
Producers
Fungus and bacteria
The sun
A diagram with arrows showing energy flow from grass to mouse to a snake is...
An energy pyramid
A food web
A food chain
A population chart
In a food web, which organisms only have arrows pointing away from them?
Omnivores
Herbivores
Decomposers
Producers
In an ecosystem, a food web...
Is identical to a food chain
Consists solely of plants and herbivores
Is a complex network of interconnected food chains
Has only one predator and one prey
What do the arrows in a food chain or food web represent?
the location and movement of organisms
which organisms are most closely related
the movement of carbon dioxide through the organisms
the transfer of matter and energy through the organisms
In a food web, arrows point in just one direction because they show how the energy goes to the animal that is _____.
(a)
Which organism is the primary consumer in this food chain?
plant
caterpillar
spider
dog and cat
In this food web, how many food sources does the lion have?
1
2
3
4
Carnivores and herbivores are both consumers. Which statement best describes how they differ from one another?
Carnivores produce all the energy they need.
Carnivores eat only animals whereas herbivores eat only plants.
Carnivores eat living organisms whereas herbivores eat organisms that have died.
Carnivores obtain energy by eating food whereas herbivores obtain energy from sunlight.
The removal of which organism would have the GREATEST effect on all remaining organisms in the food web?
producer
primary consumer
secondary consumer
tertiary consumer
Why are there no arrows pointing away from the muskrat or osprey in the food web diagram?
They make their own food
They give energy to others
Nothing shown eats them
They do not need energy
In this energy pyramid, which organisms have the most energy available?
Producers
Carnivores
Herbivores
Top Predator
Is the rodent a carnivore, herbivore, or an omnivore in this food web?
Carnivore
Omnivore
Herbivore
Identify a correct food chain that demonstrates the energy flow of this food web
Plant --> Caterpillar --> Bluebird --> Eagle
Plant --> Lizard --> Snail
Plant --> Lizard --> Snail --> Eagle
Eagle --> Lizard --> Caterpillar --> Plant
What is the primary consumer in this food chain?
Sun
Grass
Grasshopper
Frog
Put this food chain in the correct order
Grass
Grasshopper
Shrew
Snake
Mountain Lion
Match each organism with the correct trophic level
Producer
Grass
Primary Consumer
Squirrel
Secondary Consumer
Insect Eating Bird
Apex Predator
Mountain Lion
Decomposer
Bacteria
