Mycorrhizal Fungi and Plant Roots: A Symbiotic Relationship

Mycorrizal fungi help plant roots absorb nutrients and fight off harmful, soil-dwelling predators. In exchange, the fungus receives sugars and nutrients from its host plant.

Mitochondria Illustration
The prevailing opinion among experts is that when you’re looking through a microscope at mitochondria, you’re looking at highly modified bacteria whose ancestor formed a symbiosis with a larger, single-celled creature eons ago.
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