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प्रश्न
The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen, pH of the soil substratum, temperature etc. Discuss.
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उत्तर
The decomposition of detritus is due to the activities of microorganisms. The rate of growth of microbes is affected by temperature. The pH of subtratum affects the composition of microbes (acidophiles/basophils) which degrade the dead organic matter. If oxygen is present, aerobic degradation occurs. In the absence of oxygen anaerobiosis sets in and there will be incomplete degradation. Also, the degradation is due to the activity of exo enzymes secreted by the microbes and the activity of enzyme is affected by factors such as temperature etc.
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संबंधित प्रश्न
Common detritivores in our ecosystem are ______.
The major reservoir of carbon on earth is ______.
Distinguish between production and decomposition.
Define decomposition.
What is leaching?
Name the type of detritus that decomposes faster. List any two factors that enhance the rate of decomposition.
The process of mineralization by microorganisms helps in the release of ______.
Find out the INCORRECT statement
The process of mineralisation by micro organisms helps in the release of ______.
What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem?
What could be the reason for the faster rate of decomposition in the tropics?
How do you distinguish between humification and mineralisation?
A farmer harvests his crop and expresses his harvest in three different ways.
- I have harvested 10 quintals of wheat.
- I have harvested 10 quintals of wheat today in one acre of land.
- I have harvested 10 quintals of wheat in one acre of land, 6 months after sowing.
Do the above statements mean one and the same thing. If your answer is yes, give reasons. And if your answer is ‘no’ explain the meaning of each expression.
Observe the contents 1, 2, 3 and 4 of soil samples A, B and C shown in the graph. If the temperature and soil moisture of all soil samples are identical, which soil sample (s) will show faster decomposition?
1 indicates lignin content, 2 indicates chitin, 3 indicates nitrogen content, and 4 indicates sugar content
Identify the correct statements:
- Detrivores perform fragmentation.
- The humus is further degraded by some microbes during mineralization.
- Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
- The detritus food chain begins with living organisms.
- Earthworms break down detritus into smaller particles by a process called catabolism.
Choose the correct answer from the option given below:
