WorksheetsCommunities and Ecosystems
Total questions: 25
Worksheet time: 20mins
Name
Class
Date
1.
A __________ includes all living and non-living things in an environment.
a)
population
b)
niche
c)
abitotic
d)
ecosystem
2.
Which process takes Carbon Dioxide from the air and converts it into a form of carbon used by living things?
a)
Precipitation
b)
Photosynthesis
c)
Respiration
d)
Bioremdiation
3.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
4.
When nitrogen gas is turned in to a form that plants and animals can use is called
a)
Combustion
b)
Photosynthesis
c)
Decomposition
d)
Nitrogen Fixation
5.
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
6.
The original sources of energy for all living things come from
a)
decomposers, which provide energy for consumers
b)
Consumers, which provide energy for consumers
c)
Producers, which provide energy for consumers
d)
The sun, which provides energy for producers.
7.
Do we need greenhouse gases on Earth?
a)
Yes - they keep the Earth warm
b)
Yes - they keep all the gases on our planet
c)
No - they only cause terrible climate change
d)
No - they only block some of the Sun's rays
8.
In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?
a)
10%
b)
20%
c)
80%
d)
90%
9.
organisms that relies on other organisms for food; consumer
a)
herbivore
b)
decomposer
c)
heterotroph
d)
species
10.
What animals eat both producers and consumers?
a)
herbivores
b)
omnivores
c)
chemotrophs
d)
autotrophs
11.
Eutrophication is caused by
a)
runoff of excessive fertilizer and nutrients
b)
cleaning up waterways
c)
using nuclear energy
d)
using solar energy
12.
What term can be used to describe clams that eat decaying plant matter?
a)
A. Detritivores
b)
B. Tertiary consumers
c)
C. Saprotrophs
d)
D. Decomposers
13.
These gases, such as carbon dioxide, trap heat in the Earth's atmosphere causing global warming
a)
Global warming gases
b)
Hot House gases
c)
Green House gases
d)
Thermal pollution
14.
Which is true about the first (bottom) trophic level in an energy pyramid?
a)
It has the most available energy and includes all consumers
b)
It has the most avaliable energy and includes all producers
c)
It includes primary consumers (heterotrophs), which are known as herbivores
d)
In includes primary consumers (autotrophs), which are known as herbivores
15.
A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?
a)
volatilization
b)
nitrogen fixation
c)
runoff
d)
ammonification
16.
Which organisms convert toxic forms of nitrogen to non-toxic forms?
a)
Chemoautotrophs
b)
Autotrophs
c)
Bacteria
d)
Protists
17.
Carbon dioxide is added to the atmosphere by
a)
Burning fossil fuels
b)
Cellular respiration
c)
Decomposing organic matter
d)
All answers are correct
18.
When excess nutrients make their way into the waterways,
a)
fish populations increase
b)
algal blooms increase
c)
frog population increases
d)
people get more vitamins in their water
19.
An area where animals and plants have stopped thriving is known as a
a)
desert
b)
dead zone
c)
tundra
d)
taiga
20.
Why is the increase of Greenhouse gasses a big issue?
a)
It causes climate change and increase in the global temerature
b)
It can lead to a major increase in Greenhouses
c)
It leads to more factories
d)
It causes a major decrease in people
21.
Which organism make their own food through the process of photosynthesis?
a)
decomposer
b)
consumer
c)
herbivore
d)
producer
22.
Which of the following are greenhouse gases?
a)
Carbon dioxide
b)
Methane
c)
Water vapor
d)
All answers are correct
23.
The concentration of toxins as they move up a food chain can be called:
a)
Toxification
b)
Bioaccumulation
c)
Biomagnification
d)
concetoxin
24.
Hypoxic conditions have
a)
Less than 1 mg/l of Dissolved Oxygen
b)
More than 2 mg/l of Dissolved Oxygen
c)
Less than 2 mg/l of Dissolved Oxygen
d)
Less than 20 mg/l of Dissolved Oxygen
25.
Phosphorus, Nitrogen, and Carbon are building blocks of
a)
DNA
b)
Bones
c)
Blood
d)
Water
100 %
