Question

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

• A. A ring of gastric caeca is present at the junction of midgut and hind gut.
• B. Hypopharynx lies within the cavity enclosed by the mouth parts.
• C. In females, $7^{th}-9^{th}$ sterna together form a genital pouch.
• D. $10^{th}$ abdominal segment in both sexes, bears a pair of anal cerci.

Answer 1

Answer: (A)

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

Answer 2

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.