Which definition describes endosymbiosis best?
a symbiotic relationship in which one organism lives on the other organism and both organisms benefit
a symbiotic relationship in which one organism lives inside the other and both organisms benefit
a symbiotic relationship in which one organism benefits, while the other organism is harmed
1 answer
The second definition describes endosymbiosis best: a symbiotic relationship in which one organism lives inside the other and both organisms benefit.