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WorksheetsFood Webs and Food Chains LNE
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
An organism that breaks down dead plants and animals, returning matter back into the soil, is called a
a)
herbivore
b)
consumer
c)
producer
d)
decomposer
2.
How are consumers generally classified?
a)
by the amount of food they eat
b)
by the size of their tracks
c)
by the way they digest their food
d)
by the type of food they eat
3.
In a forest ecosystem, which has the most direct access to the main energy source?
a)
producer
b)
consumer
c)
decomposer
d)
scavenger
4.
Which best explains how decomposers benefit an ecosystem?
a)
They increase dead organisms within the food chain.
b)
They create food for producers within the food chain.
c)
They break down dead organisms within the food chain.
d)
They supply consumers with food within the food chain.
5.
A crow eats the remains of a dead animal. What type of consumer does this prove the crow to be?
a)
a decomposer
b)
a producer
c)
a herbivore
d)
a scavenger
6.
Which describes a consumer in a pond ecosystem?
a)
cattail
b)
catfish
c)
water lily
d)
bacteria
7.
Which best describes the role of both mushrooms and worms in an ecosystem?
a)
They provide food for carnivores.
b)
They provide food for herbivores.
c)
They provide nutrients for the soil.
d)
They provide nutrients during photosynthesis.
8.
Which organism would be eaten last in a food chain?
a)
producer
b)
decomposer
c)
first level consumer (primary)
d)
second level consumer (secondary)
9.
Which could be a secondary consumer?
a)
bear
b)
oak tree
c)
snail
d)
slug
10.
Where do decomposers work the fastest to recycle organic material? THINK!
a)
in the desert
b)
in the tundra
c)
in the rainforest
d)
in the mountains
11.
Which group of organisms make up the largest part of a food chain?
a)
carnivores
b)
consumers
c)
decomposers
d)
producers
12.
Which will most likely cause a decrease in predator populations?
a)
an increase in prey populations
b)
a decrease in prey populations
c)
a decrease in decomposers
d)
an increase in producers
13.
Which best explains why producers are at the beginning of all food chains?
a)
They turn dead animals into nutrients.
b)
They provide shelter for smaller animals.
c)
They transfer energy from the sun into food.
14.
In a food chain, the sun provides energy for an apple tree to grow. A deer eats an apple from the tree. Which is a consumer?
a)
the tree
b)
the deer
c)
the apple
d)
the sun
15.
Which organisms would be affected first if the amount of light were reduced in an ecosystem?
a)
decomposers
b)
consumers
c)
herbivores
d)
producers
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