Biogeochemical Cycles
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by JENNIFER EWBANK
| 20 Questions
Note from the author:
Biogeochemical Cycles
1
1 pt
The atmosphere is not invloved in which biogeochemical cycle?
A. Carbon Cycle
B. Water Cycle
C. Nitrogen Cycle
D. Phosporus Cycle
2
1 pt
The process in which water vapor is released from leaves into the atmosphere
A. Evaporation
B. Sublimation
C. Transpiration
D. Infiliration
3
1 pt
Adding large amounts of fertilizers would most likely impact which biogeochemical cycle
A. Carbon Cycle
B. Nitrogen Cycle
C. Phosphorus Cycle
D. Phosphorus and Nitrogen Cycle
4
1 pt
Our atmosphere is 20.9% oxygen (O2). Which provides most of the oxygen in the atmosphere?
A. Transpiration
B. Osmosis
C. Cellular Respriation
D. Photosynthesis
5
1 pt
Which best explains why scientists can predict CO2 concentrations from plants density data?
A. Plants remove CO2 from the atmosphere during cellular respiration
B. Plants remove CO2 from the atmosphere during photosynthesis
C. Plants add CO2 to the atmosphere during transpiration
D. Plants add CO2 to the atmosphere during germination

6
1 pt
Which of the following statements describes a role of plants in the water cycle?
A. Plants convert water vapor into CO2 during photosynthesis
B. Plants release H2O vapor into the atmosphere during transpiration
C. Plants transfer water to bacteria during nitrogen fixation
D. Plants release water from their roots into the soil
7
1 pt
What is the primary role of photosyntheis in the carbon cycle?
A. Transferring carbon from producers to decomposers
B. Removing carbon from the atmosphere
8
1 pt
Which of the following processes removes oxygen from the atmosphere?
A. Transpiration
B. Photosynthesis
C. Condensation
D. Respiration
9
1 pt
Which of the following statements best explains how forests reduce atmospheric CO2 levels?
A. Forest animals consume atmospheric CO2 during respiration.
B. Trees use atoms CO2 during photosynthesis to form organic compounds
C. Tree roots fix atmospheric CO2 into the soil for the trees
D. Soil bacteria break down atmosphere CO2 to make fossil fuel
10
1 pt
During respiration and Photosythsis what are 3 primary elements that cycle within the plant?
A. Hydrogen, Oxygen, and Potassium
B. Carbon, nitrogen, and Phosphorus
C. Hydrogen, carbon, and oxygen
D. carbon, iron, and sulfur
11
1 pt
A green plant is wrapped in an airtight plastic bag and placed in sunlight for one hour.
A. The O2 level inside the bag will increase during that time.
B. The O2 level inside bag will stay the same during that time.
C. The O2 inside the bag will decrease during that time.
12
1 pt
Which process describes nitrogen fixation?
A. Bacteria take N air and convert it to a form plants use
B. Plants take nitrogen from the air and store in their roots
C. Organism dies and are decomposed into ammonia in the soil
D. Animals eat plants that have N and return it to the soil
13
1 pt
Which of the following is a way that Carbon is returned to the abiotic (non-living) part of the atmosphere?
plants performing photosynthesis
secondary consumers feed on primary producers
when dead organisms decompose
when primary consumers eat producers
14
1 pt
Some farmers use manure on their crop fields. How does this help the plants?
increases soil oxygen and carbon dioxide levels
increases soil nitrogen and phosphorus levels
keeps insects from eating the crops
protects them from intense sunlight
15
1 pt
From your water distribution lab, What percent of the Earth's water is salt water?
79%
21%
97.5%
2.5%
16
1 pt
From your water distribution lab, What is the percent of water that we can use? (Lakes and Streams, and Goundwater)
79%
21%
97.5%
.5%
17
1 pt
Nutrients that organisms need in large quantities is called
macronutrients
micronutrients
nutrients
18
1 pt
Nutrients circulate endlessly throughout the environment through complex cycles called?
geochemical cycles
biochemical cycles
biogeochemical cycles
chemical cycles
19
1 pt
Primary producers use the following nutrients during photosynthesis
sugar, oxygen, and sunlight to produce carbon dioxide and water
carbon dioxide, water, and sunlight to produce sugar and oxygen
none of the above
20
1 pt
The process by which organisms use oxygen to release the chemical energy in sugars and releases carbon dioxide and water is called?
nitrification
photosynthese
denitrification
cellular respiration
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