Several plant pathogens can be controlled by the biocontrol agent

Options

A. Phytophthora
B. Trichoderma
C. Albugo
D. Saccharomyces

Answer

To solve the question regarding which biocontrol agent can control several plant pathogens from the given options, we can follow these steps:

### Step 1: Understand the Question
The question asks for the name of a biocontrol agent that can control plant pathogens. We need to identify which of the provided options is a known biocontrol agent.

### Step 2: Analyze the Options
The options provided are:
1. Phytophthora
2. Trichoderma
3. Albugo
4. Secheromyces

### Step 3: Define Each Option
- **Phytophthora**: This is a genus of plant-damaging pathogens, known for causing diseases like late blight in potatoes. It is not a biocontrol agent.
- **Trichoderma**: This is a genus of fungi that is known to act as a biocontrol agent against various plant pathogens. It helps in protecting plants by outcompeting or parasitizing harmful fungi.
- **Albugo**: This is a genus of fungi that causes diseases in plants, such as white rust. It is not a biocontrol agent.
- **Secheromyces**: This is not widely recognized as a biocontrol agent and is less known compared to Trichoderma.

### Step 4: Identify the Correct Answer
From the analysis, **Trichoderma** is the only option that is recognized as a biocontrol agent that can effectively control several plant pathogens.

### Conclusion
The correct answer is **B. Trichoderma**.

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