At the time of puberty how many primary follicle left in each ovary :-

Options

A. 60,000 – 80,000
B. 7 million
C. 10,000 – 20,000
D. 1,20,000 – 1,60,000

Answer

To answer the question about how many primary follicles are left in each ovary at the time of puberty, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Follicle Development**:
- At birth, female ovaries contain a large number of follicles, which are in the form of primary oocytes surrounded by granulosa cells.

2. **Initial Count of Follicles**:
- It is estimated that females have around 7 million primary oocytes at birth.

3. **Follicle Degeneration**:
- As females grow, many of these follicles undergo degeneration (a process known as atresia). This means that not all the follicles will survive until puberty.

4. **Count at Puberty**:
- By the time a female reaches puberty, the number of primary follicles significantly decreases due to this degeneration.

5. **Final Count**:
- At puberty, it is estimated that there are approximately 60,000 to 80,000 primary follicles remaining in each ovary.

6. **Conclusion**:
- Therefore, the correct answer to the question is that at the time of puberty, there are about 60,000 to 80,000 primary follicles left in each ovary.

### Final Answer:
- The number of primary follicles left in each ovary at the time of puberty is approximately **60,000 to 80,000**.