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WorksheetsL2.2 Food Chains and Food Webs
Total questions: 13
Worksheet time: 28mins
Green plants are producers that begin the flow of energy between organisms in a food web when they–
reproduce by generating seeds.
absorb water and nutrients from soil.
release oxygen into the atmosphere.
make their own food using sunlight.
Mold, fungi, and some types of bacteria are classified as decomposers. What is the role of a decomposer in a food web?
To break down organic wastes and dead organisms
To use sunlight and water to produce their own food
To release oxygen into the atmosphere for respiration
To provide the energy animals need for food
The diagram shows a pond food web. What two organisms get their energy directly from insect larvae?
Algae and minnows
Sunfish and bass
Minnows and sunfish
Snails and snapper turtles
The diagram shows a woodlands food chain. What is the role of the tree in the food chain?
To make energy available directly to the hawk
To use the sun’s energy to produce food
To break down waste products left by squirrels
To provide a place for the hawk to build its nest
The prairie food web illustrated here has producers and consumers. In this food web, how many more consumers than producers are there?
2
5
7
9
Scavengers are an important part of a food web because they keep the food in a dead animal's body from being wasted.
True
False
Grizzly bears eat roots, berries, fish, insects, birds, other animals, and even dead animals. This wide variety of meals makes the bear a
carnivore
herbivore
omnivore
Which organism does not directly depend on another organism for energy?
grasshopper
frog
grasses
snake
Brown bears eat grass, fruit, insects, and fish. This organism is an example of a(n) __________________.
herbivore
omnivore
carnivore
producer
Siberian tigers eat wild boar, moose and deer. This organism is an example of a(n) _______________.
herbivore
omnivore
carnivore
producer
Whitetail deer eat leaves, twigs, fruits, nuts and grass. This organism is an example of a(n) ___________________.
herbivore
omnivore
carnivore
producer
The diagram shows how energy flows through a prairie food web. If all the grasshoppers were removed, how many organisms would lose a source of energy?
Four
Five
Six
Seven
If all of the squirrels were removed from this prairie ecosystem, which animal population would most likely decrease first?
hawks
antelopes
coyotes
mountain lions
