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

What could be the reason for the faster rate of decomposition in the tropics?

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प्रश्न

What could be the reason for the faster rate of decomposition in the tropics?

टीपा लिहा
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उत्तर

The rate of decomposition is regulated by climatic factors like temperature and soil moisture as they have an effect on the activities of soil microbes. The tropics with its hot and humid climatic condition provides an environment which is ideal for the microbes to speed up the process of decomposition.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 14: Ecosystem - SHORT ANSWER [पृष्ठ १०३]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 12
पाठ 14 Ecosystem
SHORT ANSWER | Q 4. | पृष्ठ १०३

संबंधित प्रश्‍न

Common detritivores in our ecosystem are ______.


The major reservoir of carbon on earth is ______.


Define decomposition.


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 microorganisms helps in the release of ______.


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?


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


Identify the correct statements:

  1. Detrivores perform fragmentation.
  2. The humus is further degraded by some microbes during mineralization.
  3. Water soluble inorganic nutrients go down into the soil and get precipitated by a process called leaching.
  4. The detritus food chain begins with living organisms.
  5. Earthworms break down detritus into smaller particles by a process called catabolism.

Choose the correct answer from the option given below:


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