Penicillium does not allow the growth of Staphylococus bacterium and Trichoderma stops the growth of fungus Aspergilus. This type of biotic interaction is called

Options

A. parasitism
B. amensalism
C. commensalism
D. competition

Answer

To solve the question regarding the type of biotic interaction demonstrated by Penicillium and Trichoderma, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Biotic Interactions**:
- Biotic interactions refer to the relationships between living organisms in an ecosystem. These interactions can be classified into various types, including competition, predation, commensalism, parasitism, and amensalism.

2. **Identifying the Organisms**:
- The question mentions two specific interactions:
- Penicillium inhibits the growth of Staphylococcus bacteria.
- Trichoderma inhibits the growth of Aspergillus fungus.

3. **Analyzing the Nature of Interaction**:
- In both cases, one organism (Penicillium or Trichoderma) is preventing another organism (Staphylococcus or Aspergillus) from growing. This indicates a negative impact on the growth of the second organism due to the presence of the first.

4. **Defining Amensalism**:
- Amensalism is a type of biotic interaction where one organism is inhibited or destroyed while the other remains unaffected. In this case, the presence of Penicillium and Trichoderma negatively affects the growth of the other organisms without benefiting from it.

5. **Conclusion**:
- Therefore, the type of biotic interaction described in the question is called **Amensalism**.

### Final Answer:
The type of biotic interaction is called **Amensalism**.

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