Fill in the blank:
In female cockroach, sperms are transferred through_____by male cockroach?

Answer

To answer the question, "In female cockroach, sperms are transferred through_____by male cockroach," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: We need to identify the structure through which male cockroaches transfer sperm to female cockroaches.

2. **Identify Male Reproductive Structures**: In male cockroaches, the sperm is produced in the testes and then stored in a structure known as the seminal vesicles.

3. **Recognize the Role of Seminal Vesicles**: The seminal vesicles hold the sperm in a bundle form.

4. **Identify the Transfer Mechanism**: The sperm is transferred to the female cockroach in a specific form known as a spermatophore. This is a structure that encapsulates the sperm.

5. **Locate the Ejaculatory Duct**: During copulation, the sperm in the form of spermatophores is ejaculated through the ejaculatory duct.

6. **Formulate the Answer**: Based on the above information, we conclude that in female cockroaches, sperms are transferred through **spermatophore** by male cockroaches.

### Final Answer:
In female cockroach, sperms are transferred through **spermatophore** by male cockroach.

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