Question

Symbiosis is an association between two organisms in which:

• A. One is benefited and the other is neither benefited nor harmed
• B. Both species are mutually benefited
• C. One is benefited and the other is harmed
• D. Both are harmed

Answer 1

The correct option is B

Both species are mutually benefited

Symbiosis is a close association between organisms of two dfferent species and to be mutually benifitted.

Eg: Lichens are an association between algae and fungi in which the fungal partner derives its food from the algae and in gratitude shelters and protects it.

A relationship between two organisms in which one benefits and the other neither is benefited nor harmed is termed as commensalism.