Among the following the incorrect statement about the female gamete in humans :

Options

A. A layer of granulosa cells surronds primary oocytes forming primary follicles.
B. Ovum is released in the secondry oocyte is the same.
C. The ploidy level of oogonia and primary oocyte is the same
D. A fluid filled cavity called antium which leads to the formation of teriary follicle.

Answer

To solve the question regarding the incorrect statement about the female gamete in humans, we will analyze each of the provided statements step by step.

### Step 1: Understand the Female Gamete Development
- The female gamete in humans is produced through a process called oogenesis. This begins with the oogonia, which are the precursor cells that develop into oocytes.

### Step 2: Analyze Each Statement
1. **Statement A**: "A layer of granulosa cells surrounds the primary oocyte forming the primary follicle."
- This statement is correct. The primary oocyte is indeed surrounded by granulosa cells, which form the primary follicle.

2. **Statement B**: "Ovum is released in a secondary oocyte."
- This statement is incorrect. The ovum is not released as an ovum; instead, the secondary oocyte is released during ovulation. The secondary oocyte must undergo further maturation to become an ovum.

3. **Statement C**: "The ploidy level of oogonia and the primary oocyte is the same."
- This statement is correct. Both oogonia and primary oocytes are diploid (2N).

4. **Statement D**: "A fluid-filled cavity called antrum leads to the formation of tertiary follicle."
- This statement is correct. The antrum is indeed the fluid-filled cavity that forms within the secondary follicle, leading to the development of the tertiary follicle.

### Step 3: Identify the Incorrect Statement
- After analyzing all the statements, we find that **Statement B** is the incorrect statement regarding the female gamete in humans.

### Conclusion
- The incorrect statement about the female gamete in humans is **Option B**: "Ovum is released in a secondary oocyte."

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