Explain mutualism with the help of any two examples. How is it different from commensalism?

Explanation

### Step-by-Step Text Solution

**Step 1: Define Mutualism**
Mutualism is a type of symbiotic relationship between two organisms where both parties benefit from the interaction. This relationship is essential for the survival and well-being of both species involved.

**Step 2: Provide the First Example of Mutualism**
One classic example of mutualism is the relationship between lichens, which are composed of a fungus and a photosynthesizing alga (or cyanobacterium). In this relationship, the fungus provides a protective structure and absorbs moisture and nutrients from the environment, while the alga performs photosynthesis, producing food that nourishes both organisms. Thus, both the fungus and the alga benefit from this interaction.

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