Question

Ostium is the aperture present in:

• A. Ovisac
• B. Fallopian funnel
• C. Cloaca
• D. Oviduct

Answer 1

The correct option is B

Fallopian funnel

The correct option is B.

Explanation of the correct answer:

1. The female reproductive system is made up of a pair of ovaries, a pair of fallopian tubes, the uterus, the cervix, and the vagina.
2. Ostium is present in the infundibulum of the fallopian tube.
3. The infundibulum is funnel-shaped which is why it is called the fallopian funnel.
4. It has finger-like projections called fimbriae.
5. The fimbriae and the ostium help in collecting the ovum.

Explanation of the incorrect options:

Option A:

1. The ovisac is the sac in which egg cells are produced.
2. Ostium is not present in the ovisac.

Option C:

1. The cloaca is the opening of reproductive, urinary, and digestive tracts,
2. Ostium is not present in the cloaca.

Option D:

1. The oviduct is the fallopian tube.
2. Ostium is present in a part of the oviduct called the infundibulum.

Final answer: Ostium is the aperture present in the fallopian funnel.