What are two types of symbiotic relationships in plant roots?

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Quizplus · Accepted Answer

The two types of symbiotic relationships in plant roots are bacteria in root nodules and fungi in mycorrhizae. In the first type, certain bacteria such as Rhizobia live in the root nodules of legumes and fix nitrogen from the air, which the plant can then use as a nutrient. In the second type, fungi in mycorrhizae form a mutualistic relationship with the roots of most plants, increasing the plant's access to nutrients and water in exchange for carbohydrates that the plant produces.

What Are Two Types of Symbiotic Relationships in Plant Roots