Phenomenon of inhibition of growth of one species by other species through secretion of certain chemicals is termed as

Options

A. Commensalism
B. Allelopathy
C. Mutualism
D. Predation

Answer

To answer the question regarding the phenomenon of inhibition of growth of one species by another through the secretion of certain chemicals, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about a specific biological phenomenon where one species inhibits the growth of another species through chemical means.

2. **Identifying the Options**: The options provided are:
- Communalism
- Allelopathy
- Mutualism
- Predation

3. **Analyzing Each Option**:
- **Predation**: This involves one organism (the predator) killing and consuming another organism (the prey). This does not involve chemical inhibition of growth, so it is not the correct answer.
- **Mutualism**: This is a symbiotic relationship where both species benefit from the interaction. Again, this does not relate to inhibition of growth, so it is not the correct answer.
- **Communalism**: This is a relationship where one species benefits while the other is neither helped nor harmed. This does not involve inhibition of growth, so it is not the correct answer.
- **Allelopathy**: This refers to the process where one plant species releases chemicals (allelochemicals) into the environment that inhibit the growth of another plant species. This is a direct match to the phenomenon described in the question.

4. **Conclusion**: Based on the analysis, the correct answer is **allelopathy**.

### Final Answer:
The phenomenon of inhibition of growth of one species by another species through secretion of certain chemicals is termed as **allelopathy**.

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