NCERT Solutions For Class 12 Biology Chapter 3: Human Reproduction

NCERT Solutions for Class 12 Biology Chapter 3 Human Reproduction is provided in this article. It includes all the important definitions, concepts, and methodologies which will prove to be extremely beneficial for the students appearing for CBSE Class 12 Exam 2022-23. The important topics that are included in this chapter are:

• Male and Female Reproductive system
• Implantation
• Lactation
• Menstrual cycle
• Female Hormones
• Difference Between Sperm and Ovum

​Expected no. of Questions: 1-2 questions of around 3 marks.

Download pdf: NCERT Solutions for Class 12 Biology Chapter 3 Human Reproduction 

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NCERT Solutions for Class 12 Biology 3

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Class 12 Biology Chapter 3 Human Reproduction: Important Topics

Human reproduction can be defined as the biological process through which humans give birth to babies and continue to maintain their species. Human reproduction requires the interaction between two parents of the opposite sex to reproduce sexually. This chapter comprises some important topic, which are:

• Male and Female Reproductive Systems

Human reproduction occurs when both the male and female gametes combine, which are produced in their respective reproductive systems. 

• Implantation

Implantation refers to the process that happens in the earlier stages of pregnancy. When the female egg cell gets fertilized by the sperm, it travels towards the uterus through the fallopian tube.

• Parturition

Parturition explains the process of giving birth to a child as well as the placenta from the uterus to the vagina. It is a hormonal process of expulsion of a fully formed fetus from the uterus to the vagina to the outside world. It is also known as labor, delivery, and childbirth. It is the final stage of pregnancy which occurs approximately 36-38 weeks after fertilization.

• Gametogenesis 

Gametogenesis refers to the process of formation of gametes in the primary sex organs. Gametogenesis in humans includes spermatogenesis in males and oogenesis in females.

• Female Hormones

In females, the ovaries and adrenal glands form the main producers of sex hormones. Female sex hormones include estrogen, progesterone, and a small amount of testosterone.

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