CBSE Class 12 Biology – Human Reproduction

Chapter Overview

This chapter explains how humans reproduce sexually via internal fertilization. It covers the structure and function of male and female reproductive systems, the formation of gametes, fertilization, embryonic development, pregnancy, childbirth, and lactation. Throughout, the hormonal regulation guiding these processes is emphasized. :contentReference[oaicite:0]{index=0}

Important Keywords

• Gametogenesis: Formation of male (sperm) and female (egg) gametes via meiosis. :contentReference[oaicite:1]{index=1}
• Insemination: Transfer of sperm into the female reproductive tract. :contentReference[oaicite:2]{index=2}
• Fertilization: Fusion of sperm and ovum to form a zygote. Occurs in the fallopian tube. :contentReference[oaicite:3]{index=3}
• Blastocyst: Early embryonic stage that implants into uterine wall. :contentReference[oaicite:4]{index=4}
• Parturition: Process of childbirth; triggered by hormonal signals. :contentReference[oaicite:5]{index=5}
• Lactation: Production of milk by mammary glands; colostrum rich in antibodies. :contentReference[oaicite:6]{index=6}