Question

If for some reason, the vasa efferentia in the human reproductive system gets blocked, the gametes will not be transported from
A) Vagina to uterus
B) Testes to epididymis
C) Epididymis to vas deferens
D) Ovary to uterus

Answer 1

Hint:In humans, reproduction involves fusion of female and male gametes which are produced in their respective reproductive systems. Male gamete is known as sperm and female gamete is known as ovum or egg.

Complete answer:
>Option A: Uterus is connected to vagina and not the other way round. The uterus is connected to vagina via the cervix. Therefore, this is the incorrect option.
>Option B: If vasa efferentia is blocked, then transfer of sperm from Testes to epididymis will be blocked. Therefore, this is the correct option.
The pathway in which transport of sperm occurs is by,
It is produced in seminiferous tubules and then transported to rete testis
From rete testis it is transported to vasa efferentia and from there it is transported to epididymis

>Option C: Vasa efferentia is a present between testes and epididymis. Therefore, if vasa efferentia is blocked the sperm is not transported from tested to epididymis and therefore to vas deferens. As, this happens indirectly, therefore, this is the incorrect option.

>Option D: The transfer of female gametes from ovary to uterus is facilitated by fallopian tubes and not vasa efferentia. Moreover, vasa efferentia is absent in the female reproductive system. Therefore, this is the incorrect option.

Hence option ‘B’ is the correct answer.

Note:The bacteria respires like other living organisms. They oxidize food material present in the cytoplasm to obtain energy. Most bacteria obtain food from a free source of oxygen from the atmosphere.