
Remidi Agroekologi
Authored by Ahmad Ahmad
Science
University
Used 2+ times

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29 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based on the illustrated agroecosystem, which process directly returns CO2 to the atmosphere from soil and plant systems?
Uptake
Respiration
Weathering of bedrock
Nutrient inputs
2.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Fill in the blank: In sustainable agriculture, soil microorganisms primarily facilitate _______ of organic matter to release nutrients for plant uptake.
3.
OPEN ENDED QUESTION
3 mins • 1 pt
Compare natural and anthropogenic nutrient sources in an agroecosystem. Explain one example from each category provided and describe how they contribute nutrients.
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4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement best explains why nutrient cycling is essential for sustainable agriculture?
It maximizes chemical fertilizer usage.
It ensures nutrients taken up by crops are returned to the soil through natural processes, maintaining soil fertility.
It prevents decomposition by microbes.
It eliminates the need for organic inputs.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement best explains why atmospheric nitrogen (N2) must be transformed before plants can use it?
Plants can absorb N2 directly through stomata.
N2 is inert; soil microorganisms convert it into NH4+ and NO3− that plants can assimilate.
N2 is toxic to plant roots unless converted into NO2−.
N2 spontaneously becomes NH3 in soil without microbial action.
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Fill in the blanks with the correct nitrogen transformation pathway: _______ converts atmospheric N2 into NH4+, _______ oxidizes NH4+ to NO2− and then to NO3−, and _______ reduces NO3− back to N2 in anaerobic conditions.
7.
OPEN ENDED QUESTION
3 mins • 1 pt
In a well-aerated agricultural soil rich in legume roots, predict the dominant nitrogen transformations and responsible microbes. Explain your reasoning based on environmental conditions and plant associations.
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