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Ecosystems Review Biology

Total questions: 28

Worksheet time: 29mins

Name
Class
Date
1.
The relationship between seaweed and sea turtles is an example of 
a)
decomposition
b)
predator and prey
c)
competition
d)
producer and consumer
2.
How is a food web different from a food chain?
a)
A food web combines many different food chains.
b)
A food web does not include decomposers whereas a food chain does.
c)
A food web is for insects whereas a food chain is for mammals.
d)
A food web is for insects whereas a food chain is for mammals.
3.
What is the role of an oak tree in an ecosystem?
a)
It cannot make its own food.
b)
It uses the sun's energy to make food.
c)
It eats other organisms.
d)
It breaks down dead organisms and returns nutrients to the soil.
4.
A forest food chain contains a tree, grasshopper, lizard, bird, and wolf.  Which organism(s) are consumers?
a)
All of the organisms
b)
wolf, lizard, and bird
c)
wolf
d)
wolf, lizard, bird, and grasshopper
5.
Which type of organism "recycles" nutrients back into an ecosystem?
a)
decomposers
b)
consumers
c)
producers
d)
omnivores
6.
A pond ecosystem includes a number of different types of birds, mammals, reptiles, and fish.  All of these different groups make up the ecosystem's
a)
microorganisms
b)
abiotic factors
c)
populations
d)
community
7.
Dan lives in a small rural community several miles from the nearest city.  What do you predict will be the greatest immediate effect that a new housing development will have on the ecosystem surrounding Dan's community?
a)
The increase in traffic cause by the development's residents
b)
The strain on the existing school system caused by population growth
c)
The existing habitat that will be lost in construction of the development
d)
The increase in electricity and water usage required by the development.
8.
In one ecosystem, snakes eat birds, plants make fruit, and birds eat fruit.  What is the correct food chain?
a)
snake→plant→bird
b)
bird→plant→snake
c)
plant→bird→snake
d)
snake→bird→plant
9.

Which organism below is NOT an example of a decomposer?

a)

leaves

b)

mushroom

c)

worm

10.

Which of the organisms below would be a producer?

a)

algae

b)

mouse

c)

worm

11.

Which of the following organisms is a consumer?

a)

bacteria

b)

hawk

c)

mushroom

12.

A tree is an example of a _______________.

a)

consumer

b)

decomposer

c)

producer

13.

Humans are considered _______________.

a)

consumers

b)

decomposers

c)

producers

14.

A worm is an example of a _______________.

a)

consumer

b)

decomposer

c)

producer

15.

What is a producer?

a)

an organism that gets energy from eating other organisms

b)

an organism that gets energy from eating dead organisms, non-living material or waste

c)

an organism that uses sunlight to make its own food

16.

An organism that gets energy from eating other organisms is a ________________.

a)

consumer

b)

decomposer

c)

producer

17.

An organism that gets energy from breaking down dead organisms, non-living material, or waste is a ________________.

a)

consumer

b)

decomposer

c)

producer

18.

The shrew provides energy for the ________________.

a)

cricket

b)

grasshopper

c)

snake

19.

What do the arrows in a food chain/web represent?

a)

They point to the organism that is being eaten.

b)

They represent how water is transferred within a habitat.

c)

They show what direction the energy is flowing between organisms.

20.

This is an example of a ______________.

a)

food chain

b)

food pyramid

c)

food web

21.

This is an example of a ______________.

a)

food chain

b)

food pyramid

c)

food web

22.

Why might an organism have more than one arrow coming from them in a food web?

a)

More than one organism may eat them.

b)

They may eat more than one other organism.

c)

This organism gets its energy from multiple sources.

23.

What may happen if the snowshoe hare was removed from the food web pictured?

a)

The insects in the habitat would increase.

b)

The shrew population would decrease because the fox would not have as many food sources.

c)

The willow tree population would decrease.

24.

Which would likely happen if there were a sudden increase in the cricket population?

a)

There would be a decrease in the grass/flowers population.

b)

There would be a decrease in the mice population.

c)

There would be an increase in the grass/flowers population.

25.

Which of the following could go in the missing space of the food chain?

a)

bee

b)

grass

c)

snake

26.

Which organism type is missing from the food chain?

a)

consumer

b)

decomposer

c)

producer

27.

Which of the organisms from the ecosystem would NOT be a decomposer?

a)

bacteria

b)

fish

c)

fungi

28.

Which of the following is true?

a)

As moose populations rise, wolf populations decrease.

b)

More moose mean less food for wolves.

c)

As wolf populations increase, moose populations decrease.