nitrogen gas returns to the atmosphere by the action of
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Nitrogen gas returns to the atmosphere by the action of . nitrogen fixing bacteria. denitrifying bacteria. nitrifying bacteria. nitrate fertilizers. . 15. The sequence of energy flow through a food chain is . primary consumers‑ producers‑ higher order consumers . - PowerPoint PPT PresentationTRANSCRIPT
Nitrogen gas returns to the atmosphere by the action of
nitrogen fixin
g bacte
ria.
denitrify
ing bacteria
.
nitrify
ing bacteria
.
nitrate fe
rtilize
rs.
14%0%4%
82%1. nitrogen fixing bacteria.
2. denitrifying bacteria.
3. nitrifying bacteria. 4. nitrate fertilizers.
15
The sequence of energy flow through a food chain is
primary co
nsum...
higher ord
er c...
4%
85%
7%4%
1. primary consumers producers ‑ ‑higher order consumers.
2. producers higher order ‑consumers primary consumers. ‑
3. higher order consumers primary ‑consumers producers. ‑
4. producers primary consumers ‑ ‑higher order consumers.
15
In a terrestrial ecosystem, the trophic level that would contain the largest biomass would be the
producers.
primary co
nsum...
seco
ndary co
ns...
highest order ..
.
decomposers.
74%
4%11%
4%7%
1. producers.2. primary consumers. 3. secondary
consumers. 4. highest order
consumers. 5. decomposers.
15
The study of how living things interact is called:
Ecosyste
ms
Abiotic facto
r...
Ecology
The Energy Pyr...
18%11%
71%
0%
1. Ecosystems2. Abiotic factors3. Ecology4. The Energy Pyramid
10
The source of energy for almost all life on Earth is:
Fungi
Animals
Water
Sunlig
ht
0%
75%
25%
0%
1. Fungi2. Animals 3. Water4. Sunlight
15
In an energy pyramid, the bottom level represents:
Consumers
Producers
Scave
ngers
Decompose
rs
7%
30%
0%
63%1. Consumers2. Producers3. Scavengers4. Decomposers
15
An example of a consumer in a pond ecosystem is:
Water li
ly Algae
Reed Fr
og
7%
82%
0%11%
1. Water lily2. Algae3. Reed4. Frog
15
Which of these food chains is in the correct order?
caterpilla
r, c...
cattail,
cater...
wate
r snake, f.
..
cattail,
frog,...
4% 0%4%
93%1. caterpillar, cattail, frog, water snake
2. cattail, caterpillar, frog, water snake
3. water snake, frog, caterpillar, cattail
4. cattail, frog, caterpillar, water snake
15
In an energy pyramid, the lowest level has:
less
energy th...
less
energy th...
more energy t
h...
the sa
me amoun...
7%0%
89%
4%
1. less energy than the top level
2. less energy than the second level
3. more energy than the top level
4. the same amount of energy as the second level
15
A food chains shows:
one possible p...
many possi
ble ...
the amount o
f ...
the amount o
f ...
64%
7%0%
29%
1. one possible pathway for energy
2. many possible pathways for energy
3. the amount of energy available to a producer
4. the amount of energy available to a consumer
15
Decomposers are important to ecosystems because they:
are at the hig...
change sim
ple ...
make
nutrients.
..
conve
rt lig
ht ...
4% 4%
75%
18%
1. are at the highest level of the energy pyramid
2. change simple compounds into more complex ones
3. make nutrients available for producers to reuse
4. convert light energy into sugars through photosynthesis
15
Two examples of decomposers are:
fungi
and bact...
algae and m
ari...
carnivores a
nd...
ferns a
nd moss.
..
96%
0%0%4%
1. fungi and bacteria2. algae and marine
mammals3. carnivores and
herbivores4. ferns and mosses
15
A caterpillar eats a leaf, and a bird eats the caterpillar. In this interaction, the bird is a:
Producer
Herbivore
Primary co
nsum...
Seco
ndary cons..
.
0%
79%
11%11%
1. Producer2. Herbivore3. Primary consumer4. Secondary
consumer
15
How is a food web model different from a food chain?
In a w
eb, ener...
In a w
eb, ener...
In a w
eb, an o...
In a w
eb, an o...
8%0%4%
88%1. In a web, energy moves from an organism to only one other.
2. In a web, energy may move to many organisms from one.
3. In a web, an organism gets energy from one source.
4. In a web, an organism receives less energy than in a chain.
15
An unusually cold winter causes the squirrel population to decrease. This is an example of
temperature as a:
Carrying ca
pac...
Limiting fa
cto...
Climax c
ommuni...
Pattern in sp
a...
7%0%
7%
86%1. Carrying capacity2. Limiting factor3. Climax community4. Pattern in space
15
An animal that eats only plants is a:
Primary co
nsumer
Seco
ndary consu
mer
Tertiary co
nsumer
Primary producer
86%
4%0%11%
1. Primary consumer2. Secondary
consumer3. Tertiary consumer4. Primary producer
15
A snake that eats an insect-eating frog is a:
Primary co
nsum...
Seco
ndary cons..
.
Tertiary co
nsu...
Primary produc..
.
25% 25%25%25%
15
1. Primary consumer
2. Secondary consumer
3. Tertiary consumer4. Primary producer
Which of the following is difference between the nitrogen and carbon cycles?
Nitrogen ca
n e...
Carbon is rele...
Carbon is rele...
Carbon is cyc
l...
4% 0%
93%
4%
1. Nitrogen can exist as a solid but carbon cannot.
2. Carbon is released through decomposition but nitrogen is not.
3. Carbon is released through respiration but nitrogen is not.
4. Carbon is cycled through animals but nitrogen is not.
15
Which of the following makes the nitrogen cycle unique?
It is t
he only...
Nitrogen is
al...
Nitrogen is
fo...
Nitrogen re
qui...
7%
46%43%
4%
1. It is the only nutrient cycle without a gas
2. Nitrogen is always only a liquid
3. Nitrogen is found in plants, animals and the soil
4. Nitrogen requires specific bacteria for its cycle
15
Which of the following correctly traces the path of a raindrop through the water
cycle?
precipita
tion,...
precipita
tion,...
precipita
tion,...
precipita
tion,...
29%
14%11%
46%1. precipitation, run-off,
evaporation, condensation2. precipitation,
condensation, run-off, evaporation
3. precipitation, evaporation, run-off, condensation
4. precipitation, evaporation, condensation, run-off
15
Which of the following is a way carbon is added to the atmosphere?
Evaporation of...
Forest
fires
Photosyn
thesis
Form
ation of f...
25% 25%25%25%
15
1. Evaporation of water
2. Forest fires
3. Photosynthesis4. Formation of fossil
fuels
Why are legumes such as peas and alfalfa considered good for soil?
They add valua...
They absorb w
a...
Their leaves a
...
They have nitr
...
30%
59%
4%7%
1. They add valuable humus to the soil when they die and decay.
2. They absorb water and help control runoff.
3. Their leaves are able to photosynthesis at a very high rate.
4. They have nitrogen fixing bacteria in their roots.
15
Where is the oxygen we breathe produced?
in th
e rocks
by decayin
g or..
.
during photosy...
as water e
vapo...
0% 4%
96%
0%
1. in the rocks 2. by decaying
organisms3. during
photosynthesis4. as water evaporates
15
What is the major factor that limits the number and types of plants that can grow in Utah?
the amount o
f ...
the number o
f ...
the ty
pes of a
...
the lo
cation o...
67%
15%7%11%
1. the amount of rainfall we receive
2. the number of people living Utah
3. the types of animals found in Utah
4. the location of Utah on the continent
15
Which of the following is a way carbon dioxide can be removed from the air?
building d
ams
ferti
lizing c
r...
mining c
oal
planting trees
15%
78%
0%7%
1. building dams2. fertilizing crops3. mining coal4. planting trees
15