Determine the incorrect statement regarding the process of female gamete production .
I. The oogonia keep on adding in the overy till menopause .
II. The primary oocytes are halted are prophase -I of meiotic division .
III. The fluid-filled cavity present in the secondary follicles is called the atrium.
IV. The secondary oocyte forms a membrane called zone glomerulosa around it.

Options

A. II, III and IV
B. I, III and IV
C. I and II
D. III and IV

Answer

To determine the incorrect statement regarding the process of female gamete production, we will analyze each statement one by one.

### Step 1: Analyze the First Statement
**Statement I:** "The oogonia keep on adding in the ovary till menopause."

- **Explanation:** This statement is incorrect. Oogonia are the precursor cells to oocytes and they proliferate during fetal development. After birth, the number of oogonia decreases, and they do not continue to add in the ovaries until menopause. Instead, the number of oocytes declines significantly by the time of menopause.

### Step 2: Analyze the Second Statement
**Statement II:** "The primary oocytes are halted at prophase -I of meiotic division."

- **Explanation:** This statement is correct. Primary oocytes do indeed halt their development at prophase I of meiosis and remain in this stage until ovulation occurs, often many years later.

### Step 3: Analyze the Third Statement
**Statement III:** "The fluid-filled cavity present in the secondary follicles is called the atrium."

- **Explanation:** This statement is incorrect. The fluid-filled cavity in the Graafian follicle is called the antrum, not in the secondary follicle. Secondary follicles do not have a well-defined antrum; it develops later in the Graafian follicle.

### Step 4: Analyze the Fourth Statement
**Statement IV:** "The secondary oocyte forms a membrane called zona glomerulosa around it."

- **Explanation:** This statement is incorrect. The secondary oocyte is surrounded by a membrane called the zona pellucida, not zona glomerulosa. Zona glomerulosa is actually a layer of the adrenal cortex involved in hormone production.

### Conclusion
After analyzing all the statements, we find that:
- Statement I is incorrect.
- Statement III is incorrect.
- Statement IV is incorrect.

However, the question asks for the incorrect statement regarding the process of female gamete production. The most clearly incorrect statement in the context of female gamete production is Statement I.

### Final Answer
The incorrect statement is **I. The oogonia keep on adding in the ovary till menopause.**