Mark the incorrect match (w.r.t. population interactions)

Options

A. Amensalism :-,0
B. Prediation: +,-
C. Commensalism : +,+
D. Parasitism +,-

Answer

To determine the incorrect match with respect to population interactions, we need to analyze the definitions of the types of interactions mentioned: commensalism, mutualism, parasitism, and predation.

### Step-by-Step Solution:

1. **Understanding Commensalism**:
- Commensalism is a type of interaction where one organism benefits while the other is neither helped nor harmed. For example, barnacles attaching to a whale benefit from being transported to feeding areas, while the whale is unaffected.

2. **Understanding Mutualism**:
- Mutualism is an interaction where both organisms benefit from the relationship. An example is bees pollinating flowers; the bees get food (nectar), and the flowers get pollinated.

3. **Understanding Parasitism**:
- Parasitism is an interaction where one organism benefits at the expense of the other. For instance, a tapeworm living in the intestines of a host animal absorbs nutrients, harming the host in the process.

4. **Understanding Predation**:
- Predation is an interaction where one organism (the predator) benefits by consuming another organism (the prey), which is harmed in the process.

5. **Identifying the Incorrect Match**:
- The question asks for the incorrect match regarding population interactions. The incorrect match is the one that states that commensalism is a relationship where both organisms benefit. This description actually defines mutualism, not commensalism.

6. **Conclusion**:
- Therefore, the incorrect match is that commensalism is when both organisms benefit, which is a definition of mutualism.

### Final Answer:
The incorrect match is that commensalism is defined as a relationship where both organisms benefit.

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