The salivary glands in a cockroach open into the ..........

Which of the following statements is false regarding the heart of a cockroach?

In female cockroaches,the $Gynovalvular$ plates are modifications of which of the following?

In cockroaches,at the junction of $............$ and $............$,about $............$ yellow-colored,thin,thread-like Malpighian tubules are present.

The colleterial glands in a cockroach help in .....

What is the location of hepatic caeca in a cockroach?