NCERT solutions for Biology Class 12 chapter 3 - Human Reproduction [Latest edition]

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NCERT solutions for Biology Class 12 chapter 3 - Human Reproduction - Shaalaa.com
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Solutions for Chapter 3: Human Reproduction

Below listed, you can find solutions for Chapter 3 of CBSE, Karnataka Board PUC NCERT for Biology Class 12.


Exercises
Exercises [Pages 55 - 56]

NCERT solutions for Biology Class 12 Chapter 3 Human Reproduction Exercises [Pages 55 - 56]

Exercises | Q 1.01 | Page 55

Fill in the blanks:

Humans reproduce __________.

  • asexually

  • sexually

Exercises | Q 1.02 | Page 55

Fill in the blanks:

Humans are__________.

  • oviparous

  • viviparous

  • ovoviviparous

Exercises | Q 1.04 | Page 55

Fill in the blanks

Male and female gametes are __________.

  • diploid

  • haploid

Exercises | Q 1.05 | Page 55

Fill in the blanks:

Zygote is __________. (diploid/haploid)

Exercises | Q 1.06 | Page 55

Fill in the blanks:

The process of release of the ovum from a mature follicle is called__________.

Exercises | Q 1.07 | Page 55

Fill in the blanks:

Ovulation is induced by a hormone called the __________

Exercises | Q 1.08 | Page 55

Fill in the blanks:

The fusion of the male and the female gametes is called __________.

Exercises | Q 1.1 | Page 55

Fill in the blanks

The zygote divides to form __________, which is implanted in uterus

Exercises | Q 1.11 | Page 55

Fill in the blanks:

The structure which provides vascular connection between the fetus and uterus is called __________.

Exercises | Q 2 | Page 55

With the help of a neat, labelled diagram describe the human male reproductive system.

Exercises | Q 3 | Page 55

Draw a labeled diagram of female reproductive system.

Exercises | Q 4 | Page 56

Write two major functions each of ovary.

Exercises | Q 5 | Page 56

Describe the structure of a seminiferous tubule.

Exercises | Q 6 | Page 56

What is spermatogenesis? Briefly describe the process of spermatogenesis.

Exercises | Q 7 | Page 56

Name the hormones involved in regulation of spermatogenesis.

Exercises | Q 8.1 | Page 56

Define spermiogenesis

Exercises | Q 8.2 | Page 56

Define spermiation

Exercises | Q 9 | Page 56

Draw a labeled diagram of sperm.

Exercises | Q 10 | Page 56

What are the major components of seminal plasma?

Exercises | Q 11 | Page 56

What are the major functions of male accessory ducts and glands?

Exercises | Q 12 | Page 56

What is oogenesis? Give a brief account of oogenesis.

Exercises | Q 13 | Page 56

Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.

Exercises | Q 14 | Page 56

Draw a labeled diagram of a Graafian Follicle?

Exercises | Q 15.1 | Page 56

Name the functions : Corpus luteum

Exercises | Q 15.2 | Page 56

Name the functions - Endometrium

Exercises | Q 15.3 | Page 56

Name the functions - Acrosome of sperm.

Exercises | Q 15.4 | Page 56

Name the functions - Sperm tail

Exercises | Q 15.5 | Page 56

Name the functions - Fimbriae

Exercises | Q 16.1 | Page 56

Identify True/False statements. Correct each false statement to make it true

Androgens are produced by Sertoli cells. (True/False)

Exercises | Q 16.2 | Page 56

Identify True/False statements. Correct each false statement to make it true

Spermatozoa get nutrition from Sertoli cells. (True/False)

Exercises | Q 16.3 | Page 56

Identify True/False statements. Correct each false statement to make it true.

Leydig cells are found in ovary. (True/False)

Exercises | Q 16.3 | Page 56

Identify True/False statements. Correct each false statement to make it true.

Leydig cells are found in ovary. (True/False)

Exercises | Q 16.5 | Page 56

Identify True/False statements. Correct each false statement to make it true.

Oogenesis takes place in corpus luteum. (True/False)

Exercises | Q 16.6 | Page 56

Identify True/False statements. Correct each false statement to make it true.

Menstrual cycle ceases during pregnancy. (True/False)

Exercises | Q 16.7 | Page 56

Identify True/False statements. Correct each false statement to make it true.

Presence or absence of hymen is not a reliable indicator of virginity or sexual experience. (True/False)

Exercises | Q 17.1 | Page 56

What is menstrual cycle?

Exercises | Q 17.2 | Page 56

Which hormones regulate menstrual cycle?

Exercises | Q 18 | Page 56

What is parturition? Which hormones are involved in induction of parturition?

Exercises | Q 19 | Page 56

Women are often blamed for producing female children. Consequently, they are ill-treated and ostracised. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?

Exercises | Q 20 | Page 56

How many eggs are released by a human ovary in a month? How many eggs do you think would have been released if the mother gave birth to identical twins? Would your answer change if the twins born were fraternal?

Exercises | Q 21 | Page 56

How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?

Exercises | Q 21 | Page 56

How many eggs do you think were released by the ovary of a female dog which gave birth to 6 puppies?

Solutions for Chapter 3: Human Reproduction

Exercises
NCERT solutions for Biology Class 12 chapter 3 - Human Reproduction - Shaalaa.com

NCERT solutions for Biology Class 12 chapter 3 - Human Reproduction

Shaalaa.com has the CBSE, Karnataka Board PUC Mathematics Biology Class 12 CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Biology Class 12 CBSE, Karnataka Board PUC 3 (Human Reproduction) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Biology Class 12 chapter 3 Human Reproduction are The Male Reproductive System, Gametogenesis, Menstrual Cycle (Ovarian Cycle), Fertilization and Implantation, Pregnancy and Embryonic Development, Human Reproduction, The Female Reproductive System, Spermatogenesis, Oogenesis, Menstrual Hygiene, Parturition and Lactation, Embryo Development Upto Blastocyst Formation, The Male Reproductive System, Gametogenesis, Menstrual Cycle (Ovarian Cycle), Fertilization and Implantation, Pregnancy and Embryonic Development, Human Reproduction, The Female Reproductive System, Spermatogenesis, Oogenesis, Menstrual Hygiene, Parturition and Lactation, Embryo Development Upto Blastocyst Formation.

Using NCERT Biology Class 12 solutions Human Reproduction exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Biology Class 12 students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 3, Human Reproduction Biology Class 12 additional questions for Mathematics Biology Class 12 CBSE, Karnataka Board PUC, and you can use Shaalaa.com to keep it handy for your exam preparation.

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