Number of endospores usally produced by one bacterial cell is

Options

A. Numerous
B. Three to four
C. Two
D. One.

Answer

To solve the question regarding the number of endospores usually produced by one bacterial cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Endospores**: Begin by recognizing what endospores are. Endospores are a dormant and highly resistant form of bacteria that can survive extreme conditions. They are produced by certain bacteria as a survival mechanism.

2. **Identify Bacterial Genera**: Note that not all bacteria produce endospores. The primary genera known for endospore formation are Bacillus and Clostridium.

3. **Production of Endospores**: Understand that endospores are formed under stress conditions, such as nutrient depletion or extreme environmental conditions.

4. **Reproductive Nature of Endospores**: It's important to note that endospores are non-reproductive structures. This means that when a bacterial cell produces an endospore, it does not reproduce multiple endospores from that single cell.

5. **Determine the Number of Endospores**: From the understanding that one bacterial cell typically produces only one endospore, we can conclude that the answer to the question is 1.

6. **Review the Options**: Looking at the options provided:
- Numerous
- 3 to 4
- 2
- 1
The correct answer is option 4, which states that one bacterial cell usually produces 1 endospore.

### Final Answer:
The number of endospores usually produced by one bacterial cell is **1**.

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