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WorksheetsEcosystems, Food Chains and Food Webs
Total questions: 47
Worksheet time: 26mins
Name
Class
Date
1.
A __________ includes all living and non-living things in an environment.
a)
population
b)
niche
c)
abitotic
d)
ecosystem
2.
_______ factors are all living things located within an ecosystem.
a)
biotic
b)
abitotic
c)
biome
d)
niche
3.
_______ factors include all nonliving things located within an ecosystem.
a)
community
b)
abiotic
c)
bitoic
d)
ecoystems
4.
_______ are consumers that eat only meat.
a)
Herbivore
b)
Omnivore
c)
Carnivore
5.
________ are consumers that eat plants and meat.
a)
Herbivore
b)
Omnivore
c)
Carnivore
6.
An organism who eats dead animals and plants is called a ________.
a)
Decomposer
b)
Carnivore
c)
Scavenger
7.
Which type of organism eats mainly animals?
a)
omnivore
b)
herbivore
c)
carnivore
d)
producer
8.
Which group do fungi, bacteria, and termites belong to?
a)
decomposers
b)
producers
c)
herbivores
d)
omnivores
9.
Which organism make their own food through the process of photosynthesis?
a)
decomposer
b)
consumer
c)
herbivore
d)
producer
10.
Field mice eat corn. Which would most likely happen if the field mouse population grew?
a)
There would be more corn to feed the field mice.
b)
There would be less corn due to the mice eating it.
c)
The habitat would get overpopulated because the mice woudl eat too much.
11.
Which organism recieves its energy from the sun?
a)
a bee
b)
a cat
c)
a tree
d)
a grasshopper
12.
Which is a difference between abiotic and biotic factors?
a)
abiotic factors are plants and biotic factors are animals
b)
biotic factors are plants and abiotic factors are animals
c)
abiotic factors are all living things and biotic factors are all nonliving things
d)
abiotic factors are all nonliving things and biotic factors are all living things
13.
Which food chain below is stated correctly?
a)
rabbit-grasshopper-plant-eagle
b)
plant-rabbit-grasshopper-egale
c)
plant-grasshopper-rabbit-egale
14.
Which describes a decomposer?
a)
an organism that eats only plants
b)
an organism that makes its own food
c)
an organism that breaks down dead matter
d)
an organism that recieves energy from the sun
15.
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)
The transfer energy from the sun into food
16.
What are the nonliving parts of the ecosystem? This includes temperature, water, sunlight, air, and soil.
a)
biotic factors
b)
communities
c)
abiotic factors
d)
microorganisms
17.
If the population of prey increases, the population of predators will ________because of the availability of food.
a)
decrease
b)
stay the same
c)
increase
18.
As shown in this foodweb, which of these is NOT an omnivore?
a)
The grouse
b)
The grizzly bear
c)
They are all omnivores
d)
The marmot
19.
What are all members of one kind of organism that live in a particular area?
a)
population
b)
microrganisms
c)
community
d)
environment
20.
What is a group of different populations of organisms?
a)
habitat
b)
microorganisms
c)
biotic factors
d)
communities
21.
What is a series of plants and animals in which each organism is a source of food for the next in the series?
a)
food chain
b)
food web
c)
food link
d)
connection
22.
What are interconnected food chains called?
a)
consumers
b)
predators
c)
food web
23.
______is the organism that usually causes harm to the ____without immediately killing it.
a)
decomposer, parasite
b)
host, parasite
c)
organisms, parasite
d)
parasite, host
24.
_______us an organism that spends a significant portion of its life in or on this.
a)
parasite
b)
host
c)
decomposer
d)
prey
25.
What would most likely happen if an ecosystem no longer received sunlight?
a)
The number of herbivores would increase
b)
The number of plants would increase
c)
all organisms would adapt
d)
All living organisms would eventually die
26.
Which organisms eat other living organisms to survive?
a)
producers
b)
consumers
c)
decomposers
d)
scavengers
27.
Which group of organisms makes up the largest part of the energy pyramid?
a)
producers
b)
consumers
c)
decomposers
28.
What happens when the top predator is removed from an ecosystem?
a)
The number of consumers increases.
b)
The number of decomposers increases.
c)
The number of consumers decreases.
d)
The number of decomposers decreases.
29.
What is the special role an organism plays in a community?
a)
niche
b)
habitat
c)
ecosystem
d)
population
30.
On a food web, which way should the arrows point?
a)
Toward the prey
b)
Toward the predator
c)
Toward the sky
d)
Toward the sun
31.
Water is an example of...
a)
Biotic Factor
b)
Abiotic Factor
32.
A symbiotic relationship between two organisms where both species benefit.
a)
Parasitism
b)
Mutualism
c)
Commensalism
d)
BFF
33.
A symbiotic relationship where one species benefits and the other is neither harmed nor does it benefit.
a)
Parasitism
b)
Mutualism
c)
Commensalism
d)
Buddies for life!
34.
A symbiotic relationship where one species benefits and the other is harmed and does not benefit.
a)
Parasitism
b)
Mutualism
c)
Commensalism
d)
Run Away!
35.
All food chains_____________________
a)
have more consumers than producers
b)
produce and use same amount of energy
c)
begin with a producer
d)
are unhealthy
36.
Plants produce sugar and oxygen through what process?
a)
Digestion
b)
Carbon Dioxide
c)
Fermentation
d)
Photosynthesis
37.
An organism that gets food by eating other organisms?
a)
producer
b)
consumer
c)
herbivore
d)
decomposer
38.
How does energy enter an ecosystem?
a)
sunlight
b)
soil
c)
animals
d)
invasive species
39.
What are producers?
a)
organisms that store extra food
b)
organisms that make their own food
c)
breaks down dead organisms
d)
decomposes nutrients
40.
What is an organism that breaks down dead organisms and wastes to live and grown?
a)
herbivore
b)
consumer
c)
producer
d)
decomposer
41.
Which animals are examples of consumers?
a)
hawks and plants
b)
lion and hawks
c)
plankton
d)
algae and fish
42.
A lion, captures and eats other animals. What is he considered?
a)
prey
b)
predator
c)
producer
d)
healthy
43.
Which of the following animals is considered to be prey?
a)
wolves
b)
tigers
c)
hawks
d)
fish
44.
Most ecosystems have many food chains. What are food chains that overlap in an ecosystem and show feeding relationships?
a)
unhealthy
b)
energy pyramid
c)
food web
d)
matter
45.
Where is the most energy held in an energy pyramid?
a)
at the bottom (producers)
b)
middle of the pyramid
c)
there is no energy
d)
at the top (third stage consumers)
46.
What is an example of a decomposer?
a)
rabbits
b)
mushrooms
c)
fungi and some bacteria
d)
trees
47.
What is an ecosystem?
a)
producing food from sunlight
b)
animals that live in certain areas
c)
living and nonliving things that interact in an area
d)
a person who studies an environment
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