Which of the following characteristics is incorrect with respect to cockroach?

Hypopharynx lies within the cavity enclosed by the mouth parts.

In females, \(7^{\text {th }}-9^{\text {th }}\) sterna together form a genital pouch.

\(10^{\text {th }}\) abdominal segment in both sexes, bears a pair of anal cerci.

A ring of gastric caeca is present at the junction of midgut and hind gut.