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WorksheetsFood Web Crash Course
Total questions: 25
Worksheet time: 25mins
Losing the decomposers in a food chain would completely mess up ___
the Lion King movie
a clean desk
the nice balance
the garbage
Organisms, like bacteria, insects and worms, that break down waste are called ___
carnivore
herbivores
decomposers
omnivores
Energy flows through a system of living things in a "what eats what" model called ___
the carbon cycle
a food chain
the water cycle
an energy line
In an ecosystem, decomposers break down ___
nutrients
waste
insects
worms
The diagram shows a prairie food web. In the food web shown, all of the following are consumers EXCEPT – (a)
Prairie Grass
Mountain Lion
Squirrel
Robin
Use the food web pictured.
A farmer is using chemicals nearby, which ends up destroying the grass. The (a) populations would decrease since they consume the grass. The (b) populations would also decrease since their food sources have decreased. Lastly, the (c) populations would decrease.
grasshopper, mouse, and rabbit
bird, frog, owl, and fox
snake and hawk
frog, mouse, and rabbit
snake, owl, and fox
bird, frog, and mouse
The picture represents a partial food web. Complete the statement below using the word provided.
Organisms in a forest ecosystem depend on each other to survive. (a) use the energy from the sun for photosynthesis. The raccoon is a (b) because it consumes other organisms to obtain energy. The owl is a consumer because it depends on other (c) for energy. Finally, Fungus are the food web's (d) because they break down dead organisms into nutrients for the soil.
Una red alimentaria parcial se muestra en la imagen. Usa las palabras correctas para completar las frases.
Los organismos en el ecosistema del bosque necesitan uno del otro para sobrevivir. Los ... usan la energía del sol para la fotosíntesis. El mapache es un ..... porque consume a otros organismos para obtener energía. La lechuza en un consumidor porque depende de otros .... para obtener energía. Finalmente, los hongos son los ... de esta red alimenticia porque se encargan de reciclar los organismos muertos en nutrientes para la tierra.
Producers/Productores
Consumer/Consumidor
organisms/organismos
decomposer/descomponedor
A student researches an ecosystem and draws the food web shown. How many secondary consumers are in this food web? Record your answer in the space provided. (a)
5
4
2
Look at the food web and select the organism that is considered a carnivore.
Identify the organisms in this food web with their categories.
Eagle
Tertiary Consumer (or apex predator)
Tree
Producer
Deer
Primary Consumer
Snake
Secondary Consumer
Complete the food web by dragging the label of the missing organisms in the boxes.
Arctic Wildflowers
Lemmings
Hawk
Which organisms keep waste from piling up in an ecosystem?
decomposers
plants
mice
owls
Chemicals go into the ground and are taken up by ___
the sun
plants
decomposers
animals
What is 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 energy flow in a single food chain
A chart depicting the population of different species
Which of the following best describes the role of a producer in a food web?
An organism that consumes other organisms for energy
An organism that decomposes organic material
An organism that produces its own food through photosynthesis
An organism that preys on other animals
In a food web, what is the primary source of energy for producers?
Sunlight
Water
Soil nutrients
Carbon dioxide
How does energy flow through a food web?
From consumers to producers
From decomposers to consumers
From producers to consumers
From consumers to decomposers
What happens to the energy as it moves up the trophic levels in a food web?
It increases
It decreases
It remains constant
It fluctuates randomly
Which of the following organisms is most likely to be at the top of a food web?
Herbivore
Carnivore
Producer
Decomposer
What is the role of decomposers in a food web?
To produce energy from sunlight
To break down dead organisms and recycle nutrients
To consume producers
To compete with herbivores for food
Which of the following is an example of a real-world application of understanding food webs?
Designing a balanced diet for humans
Predicting the impact of removing a species from an ecosystem
Calculating the speed of a cheetah
Measuring the height of a tree
How can a change in one species affect a food web?
It only affects the species directly connected to it
It can have a ripple effect throughout the entire food web
It has no effect on the food web
It only affects the producers
What is a trophic level in a food web?
A level of energy efficiency in an ecosystem
A step in the food chain representing organisms that share the same function
A measure of the population size of a species
A type of habitat within an ecosystem
Which of the following best explains why food webs are more stable than food chains?
They have fewer species
They have more complex interactions and alternative pathways for energy flow
They rely on a single source of energy
They are easier to study
In a food web, what is the significance of keystone species?
They are the most abundant species
They have a disproportionate impact on the structure of the ecosystem
They are the largest species
They are the fastest species
