Mark the false statement w.r.t the reproductive system of female cockroach (Periplaneta americana)

Options

A. Pair of spermatheca present in the 6th segment
B. Two large ovaries lying laterally in the 2nd-6th abdominal segments
C. Each ootheca contains 9-10 eggs
D. The nymph grows by moulting about 13 times to reach the adult form

Explanation

To determine the false statement regarding the reproductive system of the female cockroach (Periplaneta americana), we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Statement 1: "Pair of spermatheca present in six segments."**
- The female cockroach has a pair of spermathecae located in the sixth abdominal segment. This statement is true.

2. **Statement 2: "Two large ovaries laying laterally in the second to sixth abdominal segment."**
- The female cockroach indeed has two large ovaries that are situated laterally in the second to sixth abdominal segments. This statement is also true.

3. **Statement 3: "Each ootheca contains 9 to 10 eggs."**
- The ootheca (egg case) of the female cockroach typically contains around 16 eggs, not 9 to 10. Therefore, this statement is false.

4. **Statement 4: "The nymph grows by molting around 13 times to reach the adult form."**
- The nymph of the cockroach undergoes approximately 13 molts before reaching the adult form. This statement is true.

### Conclusion:
The false statement regarding the reproductive system of the female cockroach is **Statement 3: "Each ootheca contains 9 to 10 eggs."**

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