The organisms which cause diseases in plants and animals are called

Options

A. pathogens
B. vectors
C. insects
D. worms

Answer

To solve the question "The organisms which cause diseases in plants and animals are called," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question is asking for a specific term that describes organisms responsible for causing diseases in both plants and animals.

2. **Evaluate the Options**:
- **Option A: Pathogen**: This term refers to any organism that can cause disease. Pathogens include bacteria, viruses, fungi, and parasites that infect plants and animals.
- **Option B: Vectors**: Vectors are organisms that carry and transmit pathogens but do not cause the disease themselves. For example, mosquitoes are vectors for malaria but do not cause the disease directly.
- **Option C: Insects**: While some insects can cause harm to plants and animals, not all insects are disease-causing organisms. Many insects are beneficial or neutral.
- **Option D: Worms**: Similar to insects, while some worms can be parasites and cause diseases, not all worms are harmful or disease-causing.

3. **Identify the Correct Answer**: Based on the definitions and roles of the options provided:
- **Pathogens (Option A)** are indeed the organisms that cause diseases in plants and animals. Therefore, this is the correct answer.

4. **Conclusion**: The organisms which cause diseases in plants and animals are called **Pathogens**.

### Final Answer:
The correct answer is **Pathogens**.

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