Question

Which of the following is not part of the male reproductive system of cockroach
1 vas deferens
2 testes
3 ejaculatory duct
4 seminal vesicles

Answer 1

Explanation:

1. A-Phallic gland-It is a long and club-shaped accessory gland. It's anterior broader end lies in the 6th segment slightly to the right of the nerve cord. It narrows posteriorly into a tubular structure and finally tapers to open by a separate aperture located close to the male gonopore at the hind end of the body.
2. B-Seminal vesicle-Seminal vesicles are located upon ejaculatory duct. They collect and store sperms from the testis.
3. C-Vas deferens-from each testis arises a thin thread-like, white vasa deferens. Both the vasa deferentia pass backwards almost to the posterior end of the abdomen and then bend forwards to meet in the middle and open into an ejaculatory duct.
4. D-Ejaculatory duct-The ejaculatory duct is an elongated wide median duct which runs backwards in the abdomen and opens out by male gonopore situated ventral to the anus.

So, the correct answer is 'A-Phallic gland, B-Seminal vesicle, C-Vas deferens, D-Ejaculatory duct

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