Thank you for reporting, we will resolve it shortly
Q.
Which of the following is an unpaired structure in male cockroach?
NTA AbhyasNTA Abhyas 2020
Solution:
The male reproductive system comprises of a pair of testes, one lying on each lateral side in the 4th to 6th abdominal segment. A thin vas deferens arises from each testes and it opens into ejaculatory duct through seminal vesicle. Into the male gonopore situated ventral to anus the ejaculatory duct open. A mushroom shaped gland is present in the 6th-7th abdominal segment and it functions as an accessory reproductive gland. Male gonapophysis of phallomere represent the external genitalia. The sperm is stored by seminal vesicles and the sperms are glued together in the form of bundle known as spermatophore which are discharge during copulation.