Sexual reproduction in human beings involves the introduction of sperm in the vagina of the female. Where does fertilisation occur?

Correct option is D

​The correct answer is (d) In the fallopian tube.

Correct answer explanation:

• Fertilization in human beings occurs in the fallopian tube, which is also called the uterine tube.
• After sexual intercourse, sperm travel through the cervix and uterus to reach the fallopian tubes, where one sperm may fertilize an egg (ovum) that has been released from the ovary during ovulation.
• Once fertilization occurs, the resulting zygote begins its journey to the uterus for implantation, where pregnancy can be established.

Information about other options:

• In the vagina: The vagina is the passage through which sperm enter the female reproductive system during sexual intercourse, but fertilization does not occur there. The sperm needs to travel further to reach the fallopian tube.
• In the uterus: The uterus is where the fertilized egg (zygote) will implant and develop into an embryo, but fertilization itself occurs in the fallopian tube, not in the uterus.
• In the cervix: The cervix is the lower part of the uterus that connects the uterus to the vagina. It allows sperm to enter the uterus but does not play a role in fertilization.

Information Booster:

Female Reproductive System: Overview:

• The female reproductive system is responsible for the production of eggs (ova), providing a site for fertilization, and supporting the development of the fetus during pregnancy. It also plays a key role in the process of childbirth.

Major Organs of the Female Reproductive System:

1. Ovaries:
• Function: Produce eggs (ova) and secrete hormones like estrogen and progesterone.
• Located in the abdominal cavity, one on each side of the uterus.
2. Fallopian Tubes (also called uterine tubes or oviducts):
• Function: Transport eggs from the ovaries to the uterus.
• Site of fertilization: The sperm meets the egg in the fallopian tube.
3. Uterus:
• Function: Houses and nourishes the fertilized egg (embryo) during pregnancy.
  
4. Cervix:
• Function: Acts as a barrier between the uterus and vagina.
• It opens slightly during ovulation to allow sperm to enter.
• During childbirth, it dilates to allow the passage of the baby.
5. Vulva:
• External part of the female genitalia that includes the labia (outer and inner folds), clitoris, and the vaginal opening.