Q40 / 288 · NTA Abhyas (NEET) 2020 · Botany · Ecosystem

Which of the following statements is INCORRECT?

  • Correct answer
    A
    The process of decomposition is anaerobic.
  • B
    Decomposition rate is slow if detritus is rich in lignin and chitin.
  • C
    Decomposition rate is fast if detritus is rich in sugars.
  • D
    Degradation of humus by microbes is called mineralization.

Solution

Detritus is the dead organic material which includes the parts or bodies of dead organisms and their faecal matter. These organic contents are broken down to inorganic substances by the process called decomposition. It is brought about by decomposers. Decomposition is a mainly an oxygen dependent process and its rate is dependent on chemical composition and climatic factors. Temperature and moisture play an important role in rate of decomposition. Enough supply of oxygen and proper moisture accelerates the decomposition process. If the detritus contains lignin chitin, tannins and cellulose , the decomposition rate decreases.

Hence, the correct answer is option: 'A'.

More Ecosystem Questions