Directions: In the following questions a statement of assertion is fo...
Vegina is a tubular female copulatory organ. Passageway for menstrual flow as well as birth canal. Vegina receives semen from male during mating but fertilization (fusion of gametes) occurs in the fallopian tube.
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Directions: In the following questions a statement of assertion is fo...
Assertion: Vagina acts as copulation canal and fertilization canal.
Reason: Both insemination and fusion of gametes occur in the vagina of females.
The correct answer is option D.
Explanation:
The vagina is an important reproductive organ in females. It serves as both a copulation canal and a pathway for the transport of sperm towards the site of fertilization. Let's understand the assertion and reason in detail:
1. Vagina as a copulation canal:
During sexual intercourse, the penis is inserted into the vagina. The vagina provides a passageway for the penis to enter the female reproductive system. It also helps in the deposition of semen into the female reproductive tract.
2. Vagina as a fertilization canal:
After ejaculation, the sperm travel through the vagina, cervix, uterus, and finally reach the fallopian tubes where fertilization occurs. The vagina plays a crucial role in transporting the sperm to the site of fertilization.
Now let's analyze the reason given:
3. Insemination and fusion of gametes in the vagina:
The reason states that both insemination (deposition of semen into the female reproductive tract) and fusion of gametes (sperm and egg) occur in the vagina. However, this statement is not correct. Insemination occurs in the vagina, but the actual fusion of gametes takes place in the fallopian tubes.
During sexual intercourse, semen containing millions of sperm is deposited into the vagina. From there, the sperm travel through the cervix, uterus, and into the fallopian tubes. It is in the fallopian tubes where the sperm encounter the egg and fertilization occurs. So, the reason given is incorrect.
To summarize:
- The assertion that the vagina acts as a copulation canal and fertilization canal is true.
- However, the reason that both insemination and fusion of gametes occur in the vagina is false.
Hence, the correct answer is option D - If both the assertion and reason are false.
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