Soil Micro-Organisms Benefits Quiz
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Questions and Answers

What are the benefits of soil micro-organisms in breaking down plant and animal residues?

Preventing unwanted accumulation of fresh organic material and converting secondary complex organic forms of nutrients to simple inorganic forms.

How do soil micro-organisms neutralize alkalinity in soils?

Sulphur oxidizing bacteria oxidize added sulphur to sulphuric acid, which neutralizes the alkalinity.

How do soil micro-organisms contribute to increasing the stability of soil aggregates?

They increase stability through the slimy intermediate products of decay and humus.

What role do soil micro-organisms play in decomposing proteins and insoluble phosphorus compounds?

<p>They decompose proteins to ammonium compounds and release insoluble phosphorus compounds in the soluble form for crop growth.</p> Signup and view all the answers

How do soil micro-organisms keep iron and manganese in insoluble non-toxic form?

<p>They oxidize divalent ferrous and mangnus ions to trivalent and tetravalent forms, which are insoluble and non-toxic.</p> Signup and view all the answers

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