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Ecosystem Organization, Food Webs, Food Chains, Energy Pyramid

Total questions: 40

Worksheet time: 1hrs 15mins

Name
Class
Date
1.
An organism that needs to eat other organisms to obtain energy is known as a:
a)
Autotroph
b)
Producer
c)
Consumer
d)
Mutualist
2.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms. 
d)
They represent how water is transferred within a habitat.
3.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
4.
How much energy is available to be passed on to the next level in an ecosystem?
a)
100%
b)
10%
c)
50%
d)
75%
5.
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. 
d)
They have no resources available to them.
6.
This organism recycles nutrients back into the soil when it breaks down dead stuff
a)
producers
b)
consumers
c)
decomposers
7.
Earthworms help break down plant and animal remains and return the nutrients back into the soil. What are earthworms?
a)
consumers
b)
decomposers
c)
producers
d)
predators
8.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
9.
An individual living thing is a/an __________.
a)
habitat
b)
ecosystem
c)
organism
d)
population
10.
A group of organisms of the same species living in the same area are called a/an ________.
a)
community
b)
habitat
c)
population
d)
ecosystem
11.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
12.

Which of the following is the smallest level of environmental organization?

a)

Biosphere

b)

Community

c)

Population

d)

Organism

13.

What are abiotic factors?

a)

the nonliving part of the environment

b)

the living part of the environment

c)

the part of the Earth where life exists

d)

all the populations of species that live in the same habitat

14.

Which of the following is NOT an example of an abiotic factor?

a)

water

b)

rocks

c)

light

d)

plants

15.

What are biotic factors?

a)

describes the living factors of the environment

b)

describes the nonliving factors of the environment

c)

the feeding relationships between organisms

d)

describes how energy in food flows from one organism to another

16.

Which is NOT an example of biotic factors?

a)

trees

b)

scorpion

c)

snake

d)

sunlight

17.

What is an herbivore?

a)

an organism that eats only animals

b)

an organism that eats only plants

c)

an organism that eats both plants and animals

d)

an organism that eats dead plants and animals

18.

What is a carnivore?

a)

an organism that eats only animals

b)

an organism that eats only plants

c)

an organism that eats both plants and animals

d)

an organism that eats dead plants and animals

19.

What is at the base of an energy pyramid?

a)

carnivores

b)

herbivores

c)

producers

d)

top predators

20.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
21.
A consumer gets energy by doing what?
a)
Making it themselves.
b)
Breaking down biotic wastes and dead organisms and returning raw materials to the ecosystem.
c)
Soaking it up from the ground.
d)
Feeding on other organisms.
22.
A food web consists of?
a)
Many overlapping food chains in an ecosystem.
b)
A series of events in which one organism eats another and obtains energy.
c)
Amount of energy that moves from one feeding level to another.
d)
Many types of insects that are stuck.
23.
What does a Primary Consumer eat?
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Producers
24.
__________ is an organism that eats BOTH plants and animals for energy.
a)
Omnivore
b)
Darnivore
c)
Carnivore
d)
Herbiovre
25.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
26.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
27.
This picture depicts which level?
a)
Population
b)
Organism
c)
Ecosystem
d)
Community
28.
Soil
a)
Abiotic
b)
Biotic
29.
Sunlight
a)
Abiotic
b)
Biotic
30.
Which level includes organisms of the same species in the same area?
a)
Organism
b)
Habitat
c)
Population
d)
4 Needs of Life
31.
the role an organism plays in the environment. 
a)
habitat 
b)
niche
32.

A large ecosystem is called a ______. A rainforest would be an example of one.

a)
Ecosystem
b)
Habitat
c)
Biome
d)
Niche
33.
An organism that eats the primary consumer.
a)
Primary Consumer
b)
Secondary Consumer
c)
Tertiary Consumer
d)
Producer
34.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
35.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
36.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
37.
In an energy pyramid, energy_______ as you move up the pyramid.
a)
Increases
b)
Decreases
c)
Stays the same
d)
Changes up and down
38.

What is the starting source of energy for all food chains?

a)

grass

b)

sun

c)

bug

d)

mushrooms

39.
What do the arrows represent in a food chain?
a)
Stop
b)
Start
c)
"Gives energy to"
40.
Which of the following is a herbivore?
a)

cricket

b)

frog

c)

hawk

d)

shrew

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