Which of the following statement(s) is/are correct?
I. Microorganisms are beneficial as well as disease causing.
II. Disease causing microorganisms are called pathogens.

Options

A. Only I
B. Only II
C. Both I and II
D. None of these

Explanation

To determine which statements are correct regarding microorganisms, let's analyze each statement step by step.

### Step 1: Analyze Statement I
**Statement I:** Microorganisms are beneficial as well as disease-causing.

- Microorganisms include various types such as bacteria, fungi, protozoa, and algae.
- Some microorganisms are beneficial; for example, certain bacteria are used in the production of yogurt and other fermented foods, and they play a crucial role in digestion.
- However, there are also harmful microorganisms that can cause diseases in humans, animals, and plants.
- Therefore, this statement is **correct**.

### Step 2: Analyze Statement II
**Statement II:** Disease-causing microorganisms are called pathogens.

- The term "pathogen" specifically refers to microorganisms that can cause disease.
- This includes various bacteria, viruses, fungi, and protozoa that lead to infections and illnesses.
- Hence, this statement is also **correct**.

### Conclusion
Both statements are correct:
- **Statement I:** Correct (Microorganisms can be both beneficial and harmful).
- **Statement II:** Correct (Disease-causing microorganisms are called pathogens).

### Final Answer:
Both statements I and II are correct.

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