Advertisements
Advertisements
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.
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.
APPEARS IN
संबंधित प्रश्न
The major reservoir of carbon on earth is _________.
Name the type of detritus that decomposes faster. List any two factors that enhance the rate of decomposition.
Write the different steps taken in humification and mineralisation during the process of decomposition.
The process of mineralization by microorganism helps in the release of ______.
Find out the INCORRECT statement
Decomposition is slow detritus is rich in ______.
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
