Egg is liberated from ovary and enters the fallopian tube in

Options

A. Secondary oocyte stage
B. Primary oocyte stage
C. Oogonial stage
D. Mature ovaum stage

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks at which stage the egg is liberated from the ovary and enters the fallopian tube.

2. **Identifying the Stages of Oocyte Development:**
- **Oogonian Stage:** This is the initial stage where the germ cells are formed. They are not yet mature eggs.
- **Primary Oocyte Stage:** After birth, oogonia develop into primary oocytes, which are arrested in prophase I of meiosis until puberty.
- **Secondary Oocyte Stage:** After puberty, primary oocytes resume meiosis and develop into secondary oocytes. This is the stage where ovulation occurs.
- **Mature Ovum Stage:** This stage occurs after fertilization when the secondary oocyte completes meiosis and becomes a mature ovum.

3. **Analyzing the Options:**
- **Option A: Secondary Oocyte Stage:** This is when the egg is released from the ovary during ovulation.
- **Option B: Primary Oocyte Stage:** The egg is still in the ovary and has not been released.
- **Option C: Oogonian Stage:** This is an earlier stage and does not involve the release of the egg.
- **Option D: Mature Ovum Stage:** This occurs after fertilization, not during ovulation.

4. **Conclusion:**
The egg is liberated from the ovary and enters the fallopian tube during the **secondary oocyte stage**.

**Final Answer:**
The correct answer is **A. Secondary Oocyte Stage**.

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