Microorganisms are commonly known as

Options

A. 1.germs
B. 2.microbes
C. 3.gametes
D. 4.Both (1) and (2)

Explanation

**Step-by-Step Solution:**

1. **Understanding the Definition of Microorganisms:**
- Microorganisms are defined as organisms that are too small to be seen with the naked eye and can only be observed through a microscope.

2. **Identifying Common Names for Microorganisms:**
- Microorganisms are often referred to by various names. The common names include:
- Germs: This term is often used to refer to pathogenic microorganisms that can cause diseases.
- Microbes: This is a shortened form of the word microorganisms and is widely used in scientific and casual contexts.

3. **Analyzing the Options Given:**
- The options provided in the question are:
- Germs
- Microbes
- Gametes
- Both 1 and 2
- We need to determine which of these options correctly identifies the common names for microorganisms.

4. **Evaluating Each Option:**
- Germs: Correct, as they refer to harmful microorganisms.
- Microbes: Correct, as this is a common term used for microorganisms.
- Gametes: Incorrect, as gametes are reproductive cells and not synonymous with microorganisms.

5. **Conclusion:**
- Since both "germs" and "microbes" are correct terms for microorganisms, the best answer is "Both 1 and 2".

**Final Answer: Microorganisms are commonly known as germs and microbes.**

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