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.
Advertisements
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 ______.
Distinguish between production and 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 ______.
What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem?
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.
Assertion (A): Decomposition process is slower if detritus is rich in lignin and cutin.
Reason (R): Decomposition is largely an oxygen requiring process.
What is catabolism in the context of decomposition?
What is the primary distinction between fragmentation and catabolism?
Which organisms are primarily responsible for fragmentation in the decomposition process?
Which of the following correctly lists the five steps of decomposition in order?
What is the primary reason lignin and chitin slow down decomposition?
What characteristic of humus allows it to act as a nutrient reservoir?
How does the presence of water-soluble substances like simple sugars and proteins affect decomposition?
