Lecture on Symbiosis

Symbiosis means the act of living together. Some symbiotic relationships are obligate, meaning that both symbionts entirely depend on each other for survival. For example, many lichens consist of fungal and photosynthetic symbionts that cannot live on their own. This lecture briefly present on Symbiosis; it means: two organisms that live together; temporarily or for a longer time and at least one of the organisms benefits from the relationship.