Read the following passage and answer the next five questions:
The reproductive cycle of female primates is called menstrual cycle. Menstrual cycle starts only after attaining sexual maturation (puberty). Generally, during ovulation only one ovum is released per menstrual cycle. The cyclical changes in the ovary and the uterus during menstrual cycle are induced by changes in the levels of pituitary and ovarian hormones. After coitus, sperms are transported to the junction of the isthmus and ampulla, where the sperm fertilises the ovum leading to formation of a diploid zygote.
Which of the following does not constitute accessory duct of female reproductive system?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Cervix
Option (1) Fallopian tubes — An accessory duct. Each fallopian tube (oviduct) runs from the ovary to the uterus. Its fimbriae collect the ovum, and fertilisation takes place in it.
Option (2) Uterus — An accessory duct. The uterus (womb) is the pear-shaped organ in which the embryo implants and grows.
Option (3) Cervix — Not counted as an accessory duct. The cervix is the narrow lower part of the uterus that opens into the vagina. It is not a separate duct. Its cavity, the cervical canal, forms the birth canal together with the vagina.
Option (4) Vagina — An accessory duct. The vagina receives the semen at coitus and forms part of the birth canal.
Note: This passage is taken from NCERT as it is. Most CUET (UG) questions come straight from NCERT, so study the book line by line, including figures and their titles.
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 Female Reproductive System – “… The female reproductive system consists of a pair of ovaries alongwith a pair of oviducts, uterus, cervix, vagina and the external genitalia located in pelvic region (Figure 2.3a).”
