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Questions and Answers
What is the primary process by which gas is exchanged between the soil and atmosphere?
What is the primary process by which gas is exchanged between the soil and atmosphere?
- Mass flow
- Diffusion (correct)
- Root respiration
- Decomposition of organic matter
What are the most important gases involved in root respiration and decomposition of organic matter in soil?
What are the most important gases involved in root respiration and decomposition of organic matter in soil?
- O2 and CO2 (correct)
- N2 and H2O
- Ar and He
- CH4 and N2O
What is a characteristic of well-aerated soil?
What is a characteristic of well-aerated soil?
- High water content
- High solid mineral content
- Adequate volume free of water and solid minerals (correct)
- Low air pressure
What is the benefit of well-aerated soil for roots and micro-organisms?
What is the benefit of well-aerated soil for roots and micro-organisms?
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Which gas exchange process between soil and atmosphere is not important for gas exchange in soil?
Which gas exchange process between soil and atmosphere is not important for gas exchange in soil?
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Which process provides energy for root respiration and decomposition of organic matter in soil?
Which process provides energy for root respiration and decomposition of organic matter in soil?
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