The Female Reproductive System

To match the methods of contraception in List I with their respective actions in List II, let's analyze each option:

1. Diaphragms: These are barrier methods that cover the cervix and block sperm entry. Thus, (a) matches with (iv).
2. Contraceptive Pills: These inhibit ovulation and may prevent implantation. Therefore, (b) matches with (i).
3. Intrauterine Devices (IUDs): These increase phagocytosis of sperm within the uterus. Hence, (c) matches with (ii).
4. Lactational Amenorrhea: After childbirth, the absence of ovulation and menstrual cycles helps prevent pregnancy. So, (d) matches with (iii).

The correct matching is: (a)- (iv); (b) - (i); (c) - (ii); (d) - (iii).

Lippes loop is a type of contraceptive device known as a Non-Medicated Intrauterine Device (IUD). This device is inserted into the uterus and provides long-term contraception by creating an environment that is inhospitable for sperm, thereby preventing fertilization.

Unlike Copper releasing IUDs, which actively release copper to enhance contraceptive efficacy, Non-Medicated IUDs like Lippes loop function purely through their physical presence and shape in the uterus.

To determine the truthfulness of the provided statements, let's examine each one individually:

Statement I: Vas deferens receives a duct from the seminal vesicle and opens into the urethra as the ejaculatory duct.

This statement is indeed correct. In the male reproductive system, the vas deferens is a tube that carries sperm from the epididymis to the ejaculatory ducts. Along this path, it receives secretions from the seminal vesicle. The point where the vas deferens and the duct from the seminal vesicle merge forms the ejaculatory duct, which opens into the urethra.

Statement II: The cavity of the cervix is called the cervical canal, which along with the vagina, forms the birth canal.

This statement is also correct. In the female reproductive system, the cervical canal is the narrow passage through the cervix, which connects the uterine cavity with the vagina. During childbirth, the cervical canal and vagina collectively form the birth canal through which the baby passes.

Based on this analysis, both statements are accurate, making the correct answer: Both Statement I and Statement II are true.