The rate of active movement of sperms is

Options

A. 1.5-3.0cm/min
B. 1.5-3.0mm/min
C. 1.5-3.0m/min
D. 1.5-3.0m/hr.

Answer

To solve the question regarding the rate of active movement of sperms, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the rate of active movement of sperms, which refers to how fast sperms can swim in a given medium, specifically in the female reproductive tract.

2. **Identify the Options**: The options provided are:
- A) 1.523 cm per minute
- B) 1.523 mm per minute
- C) 1.523 m per minute
- D) 1.523 m per hour

3. **Recall Relevant Information**: From biological studies, it is known that sperm motility is measured in terms of distance traveled over time. The typical rate of active movement of sperm is about 1.5 to 3 mm per minute.

4. **Analyze the Options**:
- Convert the options into a common unit if necessary.
- 1.523 cm per minute = 15.23 mm per minute (which is too high).
- 1.523 mm per minute is within the expected range.
- 1.523 m per minute = 1523 mm per minute (which is extremely high).
- 1.523 m per hour = 0.0254 mm per minute (which is too low).

5. **Select the Correct Option**: Based on the knowledge that the sperm's active movement is about 1.5 to 3 mm per minute, the only option that fits this range is:
- **Option B: 1.523 mm per minute**.

6. **Conclusion**: Therefore, the correct answer to the question is **Option B: 1.523 mm per minute**.