Which of the following characteristics is incorrect with respect to cockroach ? (1) In females, 7th-9th sterna together form a genital pouch. (2) 10th abdominal segment in both sexes, bears a pair of anal cerci. (3) A ring of gastric caeca is present at the junction of midgut and hind gut. (4) Hypopharynx lies within the cavity enclosed by the mouth parts.
Option 3- A ring of 6−8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut, which secrete digestive juice.
