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 option step by step.

### Step 1: Analyze the First Statement
**Statement:** A layer of granulosa cells surrounds the primary oocyte forming the primary follicle.

**Analysis:** This statement is correct. During oogenesis, the primary oocyte is indeed surrounded by granulosa cells, which form the primary follicle.

### Step 2: Analyze the Second Statement
**Statement:** Ovum is released; the secondary oocyte is the same.

**Analysis:** This statement is incorrect. The ovum is not the same as the secondary oocyte. The ovum is the mature female gamete that is released during ovulation, while the secondary oocyte is the stage just before it matures into an ovum. Therefore, this statement is the incorrect one.

### Step 3: Analyze the Third Statement
**Statement:** The ploidy level of oogonia and primary oocyte is the same.

**Analysis:** This statement is correct. Both oogonia and primary oocytes have the same ploidy level, which is diploid (2n), containing 46 chromosomes.

### Step 4: Analyze the Fourth Statement
**Statement:** A fluid-filled cavity called antrum leads to the formation of tertiary follicle.

**Analysis:** This statement is also correct. The antrum is a fluid-filled cavity that forms in the tertiary follicle during the development of the ovarian follicle.

### Conclusion
After analyzing all the statements, the incorrect statement about the female gamete in humans is the second statement: "Ovum is released; the secondary oocyte is the same."

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