Which of the following is/are present in female cockroach? A. Collateral gland B. Mushroom gland C.…
Which of the following is/are present in female cockroach?
A. Collateral gland
B. Mushroom gland
C. Spermatheca
D. Anal style
E. Phallic gland
Choose the most appropriate answer from the options given below:
B and D only
B and E only
A only
A and C only
Solution
The correct answer is option (4) as
A. Collateral gland Present in female cockroaches
It is a pair of gland that secrete the hard egg case or ootheca
B. Mushroom gland Absent in female cockroaches
Present in males in the $6^{\text {th }}$ to $7^{\text {th }}$ abdominal segments
C. Spermatheca Present in female cockroaches in the $6^{\text {th }}$ abdominal segment
D. Anal style Absent in female cockroaches
Present in males and project backwardly from $9^{\text {th }}$ sternum
E. Phallic gland Absent in female cockroaches
Present in males as a large club shaped gland located below the ejaculatory duct and reaches anteriorly up to the $5^{\text {th }}$ abdominal segment.
Thus, only structures represented by 'A' and ' C ' are present in female cockroaches.
Whereas, structures indicated by ' $B$ ', ' $D$ ' and ' $E$ ' are present in males.
Options (1) and (2) are incorrect as these structures are present in males.
Option (3) is incorrect as it represents only a single structure which is present in female cockroaches.