Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Fimbriae help in the collection of the ovum after ovulation.
Reason (R): Fimbriae are present at the edges of the ampulla, the part of the oviduct closest to the ovary.
In the light of the above statements, choose the most appropriate answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A) is true but (R) is false.
Assertion (A): Fimbriae help in the collection of the ovum after ovulation. — True. The fimbriae are finger-like projections on the edges of the infundibulum. They help in collecting the ovum released from the ovary at ovulation.
Reason (R): Fimbriae are present at the edges of the ampulla, the part of the oviduct closest to the ovary. — False. The part of the oviduct closest to the ovary is the funnel-shaped infundibulum, and the fimbriae are on its edges. The ampulla is the wider part that comes after the infundibulum, and fertilisation takes place in its region.
A is true but R is false.
NCERT Extract:
The Female Reproductive System – “… The oviducts (fallopian tubes), uterus and vagina constitute the female accessory ducts. Each fallopian tube is about 10-12 cm long and extends from the periphery of each ovary to the uterus (Figure 2.3b), the part closer to the ovary is the funnel-shaped infundibulum. The edges of the infundibulum possess finger-like projections called fimbriae, which help in collection of the ovum after ovulation. The infundibulum leads to a wider part of the oviduct called ampulla. The last part of the oviduct, isthmus has a narrow lumen and it joins the uterus.”