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    Question

    Which organic component, constituting approximately

    10-30% in plant tissues, is often categorized as "very slowly decomposed"?
    A Fats and waxes Correct Answer Incorrect Answer
    B Celluloses Correct Answer Incorrect Answer
    C Lignins Correct Answer Incorrect Answer
    D Proteins Correct Answer Incorrect Answer
    E Sugars and starches Correct Answer Incorrect Answer

    Solution

    Lignins, found in plant tissues, are complex organic polymers resistant to degradation by microbial action. Their slow decomposition contributes to the creation of more stable organic matter in soils.

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