Following are the roles of predation, except

Options

A. it helps in maintaining species diversity in a community.
B. it is a potent force of organic evolution.
C. predators act as 'conduits' of energy transfer across trophic levels.
D. the population of prey is kept under control by the predators.

Answer

To solve the question regarding the roles of predation, we need to analyze the provided statements and identify the one that is not a role of predation.

### Step-by-Step Solution:

1. **Understanding the Concept of Predation**:
- Predation involves the relationship between predators (organisms that hunt) and prey (organisms that are hunted). Predators play crucial roles in ecosystems by controlling prey populations, which helps maintain ecological balance.

2. **Analyzing the Statements**:
- We have four statements to evaluate:
1. **Helps in maintaining species diversity in a community**: This is true. Predators help control prey populations, which allows various species to coexist and maintain diversity.
2. **Is a potent force of organic evolution**: This is false. While predation can influence evolution, it is competition that is often considered a more potent force in organic evolution.
3. **Acts as a conduit for energy transfer across trophic levels**: This is true. Predators facilitate energy transfer from one trophic level to another by consuming prey.
4. **Keeps the population of prey under control**: This is true. Predators help regulate prey populations, preventing overpopulation and potential ecosystem collapse.

3. **Identifying the Incorrect Statement**:
- From the analysis, the second statement, "is a potent force of organic evolution," is identified as incorrect. It is competition, rather than predation, that is considered a primary driver of organic evolution.

4. **Conclusion**:
- The statement that does not represent a role of predation is the second one. Therefore, the answer is **"It is a potent force of organic evolution."**

### Final Answer:
The role of predation that is not true is: **"It is a potent force of organic evolution."**

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