CBSE Grade-12 Biology | 2. HUMAN REPRODUCTION by Pavan | Learn Smarter
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Knowledge
2. HUMAN REPRODUCTION

Human reproduction encompasses various processes including gametogenesis, insemination, fertilisation, and development during pregnancy. The male and female reproductive systems each play distinct roles, with spermatogenesis occurring in the male testis and oogenesis in the female ovaries. Following fertilisation, the zygote undergoes division and implantation leading to pregnancy, which culminates in parturition, the delivery of the baby.

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Sections

  • 2

    Human Reproduction

    Human reproduction involves the formation of gametes, fertilization, and subsequent embryonic development leading to childbirth.

    Learning Practice

  • 2.1

    The Male Reproductive System

    The male reproductive system comprises the testes, accessory ducts, glands, and external genitalia, and is responsible for sperm production and hormonal regulation.

    Learning Practice

  • 2.2

    The Female Reproductive System

    The female reproductive system plays a crucial role in human reproduction, including the formation of ova, fertilization, and support during pregnancy.

    Learning Practice

  • 2.3

    Gametogenesis

    Gametogenesis is the process of gamete formation, which includes sperm production in males and ovum production in females.

    Learning Practice

  • 2.4

    Menstrual Cycle

    The menstrual cycle is the reproductive cycle in female primates marking the hormonal changes that regulate ovulation and menstruation.

    Learning Practice

  • 2.5

    Fertilisation And Implantation

    Fertilisation in humans involves the fusion of sperm and ovum, leading to the formation of a zygote, followed by implantation in the uterus.

    Learning Practice

  • 2.6

    Pregnancy And Embryonic Development

    This section details the stages of pregnancy and the development of the embryo following fertilization.

    Learning Practice

  • 2.7

    Parturition And Lactation

    Parturition involves the delivery of the fetus, driven by neuroendocrine signals, while lactation refers to milk production for feeding the newborn.

    Learning Practice

  • 2.8

    Summary

    This section summarizes the key aspects of human reproduction, covering the male and female reproductive systems, gametogenesis, and the processes of fertilization, embryonic development, and childbirth.

    Learning Practice

  • 2.9

    Exercises

    This section provides exercises to reinforce understanding of human reproduction concepts, focusing on male and female reproductive systems, gametogenesis, and related processes.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Humans reproduce sexually a...
  • The male reproductive syste...
  • The female reproductive sys...

Final Test

Revision Tests