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Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

1. Azotobacter
2. Aspergillus
3. Glomus
4. Trichoderma

Correct answer: Glomus

Solution

Glomus is a mycorrhizal fungus that forms a symbiotic association with plant roots. This relationship improves the plant’s absorption of water and minerals, especially phosphorus, so it directly supports plant nutrition.

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