Question

In a particular condition, the decomposition rate is slower if detritus is rich in and ____.

• A. nitrogen and sugar
• B. ligin and chitin
• C. ligin and nitrogen
• D. chitin and sugar

Answer 1

Answer: (B)

ligin and chitin

Answer 2

The correct answer is option (B): ligin and chitin
The breakdown of the organic matter into simpler inorganic matter is called a decomposition. The rate of decomposition depends on temperature, water, oxygen availability, and composition. For the detritus with high lignin and chitin content, the decomposition rate will be slower. On the other hand, the detritus with high nitrogen content will have comparatively faster decomposition. Lignin and chitin, reduce the surface area available for the enzymatic penetration for the decomposition. Thus, the answer is lignin and chitin