NCERT Solutions for Class 12 Biology Chapter 3 – Human Reproduction
Our smart and systematic NCERT Solutions for Class 12 Biology Chapter 3-Human Reproduction have been drafted by the Biology experts. The Chapter of NCERT Solutions for Class 12 Biology cover various facets of Human reproduction such as the male reproductive organ, female reproductive organ, gametogenesis, pregnancy, stages of pregnancy and embryonic development, conceptions, menstrual cycle, fertilization and implantation, lactation, and parturition. They include details, descriptions, and illustrative diagrams associated with various concepts to help you learn easily and quickly.
The exercise of the chapter comprises 21 questions that comprehensively cover all corners of the chapter. The exercise comprises various question types such as short answer questions, long answer questions, fill in the blanks, direct questions, application-based questions and diagrammatic questions. Our CBSE NCERT Class 12 Biology Chapter 3 solutions help you learn how to deal with all these question types and score high in your Class 12 board exams.
Our NCERT Solutions are the perfect study material to refer to while learning and revising during your board exams, they not only help you build a sound conceptual base but also help you prepare well for various competitive exams. They are well-structured, easy to understand and follow a logical flow to help you learn effectively. They have been designed to make learning biology a more fun, fascinating and enjoyable process.
Introduction to NCERT Class 12 Biology Chapter 3
As compared to the simple asexual reproduction, humans reproduce through the complex sexual system. Though it does seem mysterious and abstract, Our NCERT Solutions for Class 12 Biology Chapter 3-Human Reproduction help you get an in-depth understanding of the various facets of the human reproductive system. Some of the topics covered here are discussed below.
This section of our NCERT Class 12 Biology Chapter 3 solutions describe the reproduction and fertilization procedure that results in an offspring. It tells you that plants and animals both must reproduce to propagate the species. The two methods of reproduction are known as asexual reproduction and sexual reproduction. This section elaborates about how reproduction in human beings requires sexual intercourse.
- The Male Reproductive System
This section of NCERT Class 12 Biology Chapter 3 tells you that the function of the reproductive system in the male is to produce sperm and transfer it to the female reproductive tract. The pair of testes produce sperm and androgens, the male hormone. The penis delivers the sperm. It also tells you that the testes are located within the scrotum.
With the help of a detailed diagram of a male reproductive system, this section of our solutions helps you clearly understand its various components and the function of each component.
- The Female Reproductive System
In NCERT CBSE Class 12 Biology Chapter 3, you will learn about how females produce egg cells called ova for reproduction. You will also learn how the male sperm fertilizes the egg in the fallopian tubes and how the fertilized egg implants in the uterus wall, commencing pregnancy. Further, you will learn that various Internal and external parts make up the female reproductive system.
With the help of a detailed diagram of a female reproductive system, this section of our solutions helps you clearly understand its various components and the function of each component.
Here you will learn that spermatogenesis gives rise to sperm from the seminiferous tubules. Leydig cells secrete Testosterone, the male sex hormone.
This section teaches about oogenesis procedure and how ovaries produce ova (egg).
It also tells you how the secretion of female sex hormones progesterone and estrogen takes place.
From this topic, you will know how gametes develop through the study of gametogenesis. The two parts are the sperm production in the male and ova generation in the female.
- Menstrual Cycle
This section of CBSE NCERT Class 12 Biology Chapter 3 tells you that matured females experience menstrual cycles that last for about 28 days. At the end of the physiological cycle, the uterine endothelium collapses as blood and mucus through the vagina. LH – a luteinizing hormone, FSH – a follicle-stimulating hormone, progesterone, and oestrogen are the menstrual cycle regulators.
- Fertilization and Implantation
This section teaches about the male sperm, the female ova or egg and conception. It tells you that the foetus develops by implanting on the uterus wall.
- Pregnancy and Embryonic Development
Here you will also learn about pregnancy and embryonic development, and that pregnancy goes through three phases over roughly nine months.
This part of the NCERT Class 12 Biology Chapter 3 tells you that The birth process or the expulsion of a developing foetus through the vagina is called parturition. After gestation completes, the birth talks place as a result of expulsion from the womb of the mother. Oxytocin and Relaxin are important hormones at this stage. Oxytocin contracts the myometrium smooth muscles and directs the developing foetus to the birth canal. Relaxin widens the pelvis by relaxing the ligaments at the pelvis, facilitating an easy birth.
Here you will learn that mammary glands of the female within the breasts secrete milk after childbirth. Nutrition and immunity come to the new-born baby from the milk. The process is known as breastfeeding or nursing and has many advantages for the baby.
NCERT CBSE Class 12 Biology Chapter 3 Exercise
NCERT Solutions for Chapter 3- Human Reproduction cover 21 questions of the exercise given at the end of the chapter. Some of them have been discussed below.
- Question 1 is fill in the blanks covering all sections of the chapter.
- Question 2 and 3 are diagram related questions that cover the male and female reproductive organ
- Question 4 is a direct question asking you about testis and ovary functions
- Question 5 and 6 is a direct question regarding seminiferous tubule and spermatogenesis
- Question 7 asks about the name of the hormones related to spermatogenesis
- Question 8 is a direct question asking about the definition of the spermiogenesis and spermiation.
- Question 9 requires you to draw a diagram of sperm
- Question 10 and question 11 are direct questions regarding seminal plasma and the major function of ducts and glands
- Question 12 is a direct question on oogenesis
- Question 13 and 14 is about drawing diagram of the ovary and Graafian follicle
- Question 15 is about naming the function of different parts.
- Question 16 is true and false, covering the whole chapter.
- Question 17 and 18 are direct questions asking regarding the menstrual cycle and parturition.
- Question 19 is a chromosome related question.
- Question 20 and 21 is a direct question from the chapter about the topic egg.
Benefits of CBSE NCERT Class 12 Biology Chapter 3- Human Reproduction
You can benefit in more ways than one if you choose to learn from Insasolv’s NCERT Solutions for Class 12 Biology Chapter 3- Human Reproduction. Some of them have been listed below.
- Our NCERT Solutions are a hundred per cent accurate and to the point.
- They have been drafted as per the latest CBSE Class 12 Biology Syllabus.
- They cover all concepts in details.
- They help you become thorough with all topics and sub-topics of the chapter
- Our NCERT Solutions cover all questions from all exercises in a step by step manner.
- They cover a wide range of question types important from exam point of view
- Our smart study techniques and learning shortcuts help you learn quickly and score more marks.
- They have been designed to clear all your doubt and improve your retention rate.