NEW
Font size
S
M
L
XL
WorksheetsEcosystems
Total questions: 63
Worksheet time: 56mins
Name
Class
Date
1.
An individual living thing is a/an __________.
a)
habitat
b)
ecosystem
c)
organism
d)
population
2.
The place where an organism lives is its _________.
a)
habitat
b)
abiotic
c)
ecosystem
d)
community
3.
All of the nonliving parts of an ecosystem are _______.
a)
biography
b)
biotic
c)
abiotic
d)
biology
4.
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
5.
A group of different species that live together and interact in an environment are called a/an ________.
a)
community
b)
habitat
c)
population
d)
ecosystem
6.
Energy flow for an ecosystem starts with...
a)
Sun
b)
Moon
c)
Neither
7.
The part of Earth where organisms can live.
a)
biotic factors
b)
biosphere
c)
ecology
d)
biology
8.
Organisms that make up the living part of an ecosystem.
a)
abiotic
b)
biotic factors
c)
ecology
d)
ecosystems
9.
Nonliving things found in an ecosystem.
a)
factories
b)
factor trees
c)
biotic factors
d)
abiotic factors
10.
The study of interactions in an ecosystem.
a)
ecology
b)
philosophy
c)
scientology
d)
biology
11.
A group of the same type of organisms living in the same place at the same time.
a)
threatened species
b)
populations
c)
community
d)
limiting factor
12.
A species that is in danger of becoming extinct.
a)
Threatened species
b)
out of luck
c)
do do birds
d)
endangered species
13.
A species that needs to be protected but is not in danger of becoming extinct.
a)
endangered species
b)
threatened species
c)
sub species
d)
special species
14.
Something that limits the size of a population.
a)
maxfactor
b)
factor tree
c)
the x factor
d)
limiting factor
15.
Deserts, mountains, and rivers are all examples of ________.
a)
vacation spots
b)
tundra
c)
ecosystems
d)
wetlands
16.
Ecosystems are always______.
a)
always changing
b)
always balanced
c)
never changing
d)
never balanced
17.
The role of an organism in its ecosystem is called the organism's __________.
a)
hot roll
b)
niche
c)
leading role
d)
role of a lifetime
18.
Decomposers get their food by __________.
a)
making it themselves
b)
eating live organisms
c)
using dead organisms
d)
eating themselves
19.
In an ecosystem, producers and consumers are both __________.
a)
biotic factors
b)
very nice
c)
cranky
d)
abiotic factors
20.
Which is an abiotic factor that most limits the number of frogs living in a pond?
a)
the color of the water
b)
the number of predators
c)
the temperature of the water
d)
the populations of producers
21.
Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?
a)
The horned owl population will consume more field mice.
b)
Horned owls will follow the field mice to a different area.
c)
The horned owl population will increase in the area.
d)
Horned owls will change to a plant-based diet.
22.
Which population would be most affected if there is a decrease in the population of aquatic insects?
a)
elk
b)
frog
c)
moose
d)
squirrel
23.
Which species are best able to occupy the same space?
a)
those that eat the same foods
b)
those that compete for the same resources
c)
those that have a predator/prey relationship
d)
those whose needs differ significantly from each other
24.
Which best describes a way photosynthesis provides resources to animals?
a)
Photosynthesis produces carbon dioxide, decreasing the animal’s need for oxygen.
b)
Photosynthesis increases plant growth, providing places for many animals to live
c)
Photosynthesis produces excess moisture from the plants, reducing the need for a water supply.
d)
Photosynthesis increases plant growth, providing food for carnivores and eliminating the need to hunt.
25.
Deer are introduced into a grassland ecosystem and their population increases considerably. If the deer population continues to grow, which is the most likely outcome for the ecosystem?
a)
Biodiversity would decrease, and sustainability would decrease.
b)
Biodiversity would decrease, and sustainability would increase.
c)
Biodiversity would increase, and sustainability would increase.
d)
Biodiversity would increase, and sustainability would decrease.
26.
Which species would be most affected by the overfishing of Alaskan salmon?
a)
bears
b)
crayfish
c)
lobsters
d)
opossum
27.
Below is an example of a simple food chain.
Acorn → Squirrel → Fox → Mountain Lion
What will most likely happen if squirrels are removed from the food chain?
Acorn → Squirrel → Fox → Mountain Lion
What will most likely happen if squirrels are removed from the food chain?
a)
The fox will eat acorns
b)
The fox population will decrease
c)
The trees will produce fewer acorns.
d)
The mountain lion population will increase
28.
A rainforest area is experiencing a severe drought. As a consequence, the insect population has decreased. What will the insect-eating birds most likely do as a result of the drought?
a)
stop searching for food until it begins to rain
b)
begin reproducing to increase population
c)
move to a new area to find food
d)
start the process of hibernation
29.
Which is an abiotic factor that would affect the growth of a population within an ecosystem?
a)
the availability of water
b)
the availability of producers
c)
the type of herbivores present
d)
the number of carnivores present
30.
Prairie dogs rely on underground tunnels for shelter. Which bestexplains how the prairie dog population is affected when their tunnels are disrupted and exposed?
a)
The prairie dogs are burned by the sun.
b)
The prairie dogs are exposed to predators
c)
The prairie dogs can find more food to eat in the fields
d)
The prairie dogs are forced to learn to live in trees and shrubs
31.
When an ecosystem is affected by loss of shelter, what happens to the populations in that ecosystem?
a)
They can decrease or die out
b)
They are usually not affected
c)
They can readily adapt to the changes
d)
The populations increase
32.
As populations grow, they tend to spread out into new territory. Which limiting factor is most likely to become an issue?
a)
food
b)
shelter
c)
space
d)
water
33.
Wildlife corridors are areas where wildlife can travel between two natural areas that are separated by urban development, such as highways. The development of wildlife corridors is an attempt to decrease the effect of which factor?
a)
excess predators
b)
limited shelter
c)
limited space
d)
excess water
34.
In a forest ecosystem, a food chain might look like this:
green plants → rabbit → fox → panther
If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
green plants → rabbit → fox → panther
If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
a)
There would be fewer rabbits for the foxes to eat.
b)
The panthers would have to begin to eat green plants.
c)
There would be an increase in the fox population
d)
There would be more green plants for the rabbits to eat
35.
Which are located at the very BOTTOM of an energy pyramid?
a)
producers
b)
consumers - Level 1
c)
consumers - Level 2
d)
decomposers
36.
A relationship where both organisms benefit is called __________.
a)
mutualism
b)
commensalism
c)
parasitism
37.
A relationship where one organism benefits and one organism is harmed is called __________.
a)
mutualism
b)
commensalism
c)
parasitism
38.
A relationship where one organism benefits and one organism is unaffected is called __________.
a)
mutualism
b)
commensalism
c)
parasitism
39.
Organisms that hunt other organisms for food are called __________.
a)
predators
b)
prey
c)
producers
d)
heterotrophs
40.
A bird in a tree watched as a lion stalked, attacked, and then ate a zebra. Which of these animals was the prey?
a)
bird
b)
lion
c)
zebra
d)
all of the above
41.
A bird hitches a free, safe ride on the back of a grey elephant. The elephant doesn't seem to mind and barely notices the bird. Which type of relationship is this?
a)
mutualism
b)
commensalism
c)
parasitism
42.
Carnivores, herbivores, omnivores, and scavengers are all examples of __________.
a)
producers
b)
consumers
c)
decomposers
d)
abiotic factors
43.
A consumer?
a)
Makes its own food
b)
Eats dead plants and animals
c)
Eats plants and other animals for energy
d)
Buys toys for kids
44.
A decomposer?
a)
Eats dead plants or animals and breaks down to put nutrients in the soil
b)
Eats plants or other animals for food
c)
Makes its own food
d)
Machine that gathers trash
45.
A producer?
a)
Eats other plants and animals
b)
Makes its own food
c)
Eats dead plants or animals
d)
Makes toys for kids
46.
A consumer that hunts is called:
a)
a producer.
b)
an omnivore.
c)
a predator.
d)
a herbivore.
47.
Canopy
a)
The bottom, or ground, layer in a forest.
b)
The layer between the ground and the tree tops.
c)
The very top of the forest.
48.
Plants in the desert are able to store__________ in their roots, stems and leaves.
a)
evaporation
b)
nocturnal
c)
water
d)
driest
49.
The cold biome of the far north is called the
a)
Northern
b)
Pole
c)
artictc tundra
50.
All living things need _________ and _________ factors to survive.
a)
food and plants
b)
biotic and abiotic
c)
sunlight and good weather
d)
cans of tuna and water
51.
What does biodiversity mean?
a)
Only one species in an area.
b)
The different amount of species in an area
c)
All abiotic life
d)
Nitrogen fixation
52.
An animal that eats only plants.
a)
scavenger
b)
omnivore
c)
herbivore
d)
carnivore
53.
An animal that eats both plants and animals.
a)
carnivore
b)
omnivore
c)
herbivore
d)
scavenger
54.
An animal that eats only meat.
a)
herbivore
b)
omnivore
c)
carnivore
d)
scavenger
55.
Organisms that breakdown all the dead plants and animals and their waste and are converted into nutrients for plants.
a)
carnivores
b)
consumers
c)
producers
d)
decomposers
56.
All the green plants that provide the energy for consumers.
a)
consumers
b)
producers
c)
decomposers
d)
herbivores
57.
A diagram that shows the transfer of energy from one organism to another (who is eaten by what).
a)
ecosystem
b)
environment
c)
food chain
d)
food web
58.
A diagram that shows the transfer of energy in an ecosystem by using several food chains.
a)
ecosystem
b)
food web
c)
environment
d)
food chain
59.
In an Energy Pyramid, the most energy is located...
a)
at the top
b)
at the bottom
c)
in the middle
d)
in the center
60.
A series of events in which one organism eats another and obtains energy is called a
a)
ecosystem
b)
food web
c)
food chain
d)
Pokemon (Gotta Catch 'Em All!)
61.
Which organism is a primary producer?
a)
phytoplankton
b)
krill
c)
copepods
d)
carnivorous plankton
62.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
63.
What is Natural Selection?
a)
A theory that the strong survive while the weak don’t
b)
Lamarcks Theory about animals
c)
The idea that past generations were better suited to environments than the modern generations
d)
Stronger animals die easier than weaker animals
Reset
