Question

In forest litter, which of the following compounds is the most resistant to decomposition?

• A. Protein
• B. Fat
• C. Lignin
• D. Water-soluble compounds

Hint:

Decomposition of organic matter:
- Water-soluble compounds: Rapid decomposition.
- Proteins: Moderate decomposition.
- Lignin: Most resistant (slow decomposition).

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
This question tests knowledge of decomposition of organic matter in forest litter.

Step 2: Detailed Explanation:
In forest litter, lignin (C) is the most resistant to decomposition.
Lignin is a complex polymer that is difficult for microorganisms to break down.
It contributes to the slow decomposition of woody plant material.
Other compounds:
- Protein (A): Decomposes relatively quickly.
- Fat (B): Decomposes slower than proteins but faster than lignin.
- Water-soluble compounds (D): Decompose rapidly.
Thus, lignin is the most resistant.

Step 3: Final Answer:
Thus, lignin is the most resistant compound to decomposition in forest litter, which corresponds to option (C).
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