NEET (UG) 2024 — Question 171

Correct answer is option (2), because in both sexes of cockroach, $10^{\text {th }}$ segment bears a pair of

jointed filamentous structures called anal cerci.

Options (1), (3) and (4) are incorrect because $5^{\text {th }}, 8^{\text {th }}$ and $9^{\text {th }}$ segments do not bear such

structures.

In adult cockroaches only $10^{\text {th }}$ segments are present in abdomen. $11^{\text {th }}$ abdominal segment is

absent.