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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Distinguish between production and decomposition.

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प्रश्न

Distinguish between production and decomposition.

अंतर स्पष्ट करें
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उत्तर

Sr. No. Production Decomposition
1. It is the pheno­menon of synthesis of fresh biomass. It is the pheno­menon of degra­dation of waste organic matter by decomposers.
2. It locks up inor­ganic nutrients into the biomass. It releases inor­ganic nutrients from organic matter into the environment.
3. It traps energy. It releases energy.
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अध्याय 12: Ecosystem - EXERCISES [पृष्ठ २१५]

APPEARS IN

एनसीईआरटी Biology [English] Class 12
अध्याय 12 Ecosystem
EXERCISES | Q 6. (b) | पृष्ठ २१५
नूतन Biology [English] Class 12 ISC
अध्याय 14 Ecosystem
NCERT EXERCISES WITH ANSWERS | Q 6. (b) | पृष्ठ ६५९

संबंधित प्रश्न

Common detritivores in our ecosystem are ______.


The major reservoir of carbon on earth is ______.


What is leaching?


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.


Decomposition is slow detritus is rich in ______.


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?


The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen, pH of the soil substratum, temperature etc. Discuss.


A farmer harvests his crop and expresses his harvest in three different ways.

  1. I have harvested 10 quintals of wheat.
  2. I have harvested 10 quintals of wheat today in one acre of land.
  3. 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.


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


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?


Which chemical composition of detritus favours rapid decomposition?


Which of the following conditions inhibits decomposition?


What is the primary reason lignin and chitin slow down decomposition?


Which step of decomposition makes nutrients available again to producers?


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?


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