NCERT Solutions for Class 12 Biology, Chapter 3 - Human Reproduction

The third chapter in NCERT class 12 Biology is about human reproduction. NCERT Solutions for Class 12 Biology Chapter 3 help our students by providing them with the right study materials, which will eventually help them for their upcoming examinations. At UrbanPro, you will find the solutions to your queries about the events that take place in human reproduction, such as the formation of sperm in males and ovum or eggs in females.

Let us take a look at the topic covered under this chapter- Human Reproduction

3.1. The Male Reproductive System

3.2. The Female Reproductive System

3.3. Gametogenesis

3.4. Menstrual Cycle

3.5. Fertilisation and Implantation

3.6. Pregnancy and Embryonic Development

3.7. Parturition and Lactation

In Chapter 3 of Biology, you will learn about:

Section 3.1: In this section of chapter 3, you will study about the male reproductive system. The reproductive organs are located near the pelvis region of males. It comprises of a pair of testes along with glands, accessory ducts, and the external genitalia. Here you will learn about the location of these parts and functions of these parts in producing the sperm. This section has been explained with the help of diagrams as well.

Section 3.2: In the previous section, we covered the male reproductive system and its functions. In this section, you will learn about the female reproductive system. The reproductive system of females comprises of a pair of oviducts, cervix, uterus, and vagina which is situated near the pelvic area.

Section  3.3: In this section, you will study about gametogenesis. Gametogenesis is the process where cells undergo meiosis to form gametes. The primary sex organs of both male and female produce gametes, that is, sperms and ova, respectively. The sperms in males are produced by spermatogenesis, and the ovum in females is produced by oogenesis.

Section 3.4: In this section, you will study about the reproductive cycle that all-female primates experience and it is known as menstruation. The first menstrual cycle in female primates starts at the stage of puberty and is known as menarche. The menstruation is repeated at an interval of around 28 to 29 days in human females.

Section 3.5: In this section, you will study how fertilisation and implantation take place. Fertilisation occurs when the ovum and the sperm are transported at the same time to the ampullary area. Fertilisation is the process where the sperm fuses with the ovum.

The stage of pregnancy where the embryo sticks to the wall of the uterus is known as implantation.

Section 3.6: For this Section, pregnancy and embryonic development have been explained thoroughly in chapter 3 of biology.

Section 3.7: In this Section, Parturition and Lactation have been discussed in details. Parturition is the process of delivering the foetus (childbirth). The mammary glands of females change, and they start producing milk by the end of pregnancy through the process known as lactation.

For answers to all questions given in the exercises, refer to Human Reproduction Class 12 NCERT Solutions. At UrbanPro, you can also find the Human Reproduction Class 12 NCERT Pdf Download, which will be of great help to you.