CBSE Class 12 Biology – Reproduction in Organisms

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Study Materials

12th

12th - Biology

Reproduction in Organisms

Chapter Overview

This chapter dives into how organisms reproduce to ensure continuity of their species. It describes two fundamental modes—asexual (single parent) and sexual (involving gamete fusion)—along with their advantages, mechanisms, and examples.

You’ll also learn about reproductive structures in flowering plants and humans, and processes like fertilization, embryonic development, and reproductive health.

Important Keywords

  • Reproduction: Process by which organisms produce offspring similar to themselves. :contentReference[oaicite:1]{index=1}
  • Asexual Reproduction: Single-parent reproduction without gamete fusion.
  • Sexual Reproduction: Involves fusion of male and female gametes.
  • Gametogenesis: Process of forming male (sperm) and female (ovum) gametes via meiosis.
  • Fertilization: Fusion of sperm and egg to form a zygote.
  • Embryo: Early developmental stage of a multicellular organism.
  • Vegetative Propagation: Plant reproduction using non-sexual parts like stems or tubers.

Detailed Notes

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