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Question
Assertion :The rate of decomposition of detritus is reduce in the regions of high altitude. Reason: It happen due to immobilisation of nutrients.
Assertion :The rate of decomposition of detritus is reduce in the regions of high altitude. Reason: It happen due to immobilisation of nutrients.
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Solution
The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Several processes like fragmentation of detritus(waste), leaching and catabolism are involved in the process of decomposition. During the decomposition process under certain conditions, soil nutrients get tied up with the biomass of microbes and become unavailable to other organisms.
- This incorporation of nutrients in microbes is called nutrient immobilization. Several climatic and chemical factors regulate the rate of decomposition like temperature, the chemical quality of detritus.
- Low temperature i.e., less than 10oC sharply reduces the decomposition rate even in the presence of good moisture. For example, in regions of the high altitude, the complete decomposition of detritus takes place in several years or decades. So, the correct option is A.
- Several processes like fragmentation of detritus(waste), leaching and catabolism are involved in the process of decomposition. During the decomposition process under certain conditions, soil nutrients get tied up with the biomass of microbes and become unavailable to other organisms.
- This incorporation of nutrients in microbes is called nutrient immobilization. Several climatic and chemical factors regulate the rate of decomposition like temperature, the chemical quality of detritus.
- Low temperature i.e., less than 10oC sharply reduces the decomposition rate even in the presence of good moisture. For example, in regions of the high altitude, the complete decomposition of detritus takes place in several years or decades. So, the correct option is A.
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