Question

Match the following with reference to cockroach and choose the CORRECT option.

	Column I		Column II
P.	Anal style	(i)	$10th$ tergite
Q.	Testis	(ii)	$2^{nd}$ - $6th$ segments
R.	Anal cerci	(iii)	$9th$ stemite
S.	Ovary	(iv)	$4th$ - $6th$

• A. P-(i), Q-(iv), R-(iii), S-(ii)
• B. P-(iii), Q-(iv), R-(i), S-(ii)
• C. P-(iii), Q-(ii), R-(i), S-(iv)
• D. P-(i), Q-(ii), R-(iii), S-(iv)

Answer 1

Answer: (B)

In cockroaches, the male reproductive system consists of a pair of testes, vas deferns, ejaculatory duct, seminal vesicle, mushroom gland and external genitalia. Testes are present at 4^th to 6^th segments.
The female reproductive system consists of a pair of ovaries, oviduct, vagina, genital chamber. Ovaries are present at 2^nd to 6^th segments.
Male and female cockroaches show sexual dimorphism. Males show presence of anal cerci and anal styles while females have only anal cerci. Anal cerci arises from 10^th tergite and anal style is from 9^th sternite.