CBSE Class 12 Biology – Sexual Reproduction in Flowering Plants

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Study Materials

12th

12th - Biology

Sexual Reproduction in Flowering Plants

Chapter Overview

This chapter uncovers the sexual reproduction process in angiosperms: how flowers form, how male and female gametes develop, and how fertilization leads to seeds and fruits. You’ll learn about key stages—pre-fertilization, pollination, double fertilization, and post-fertilization events—as well as structures like stamens and pistils.

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Important Keywords

  • Androecium: male part of flower including stamens (anther + filament).
  • Gynoecium: female part—pistil composed of stigma, style, and ovary.
  • Microsporogenesis: formation of pollen grains via meiosis.
  • Megasporogenesis: formation of megaspores inside ovule.
  • Pollination: transfer of pollen from anther to stigma.
  • Double Fertilization: unique angiosperm process—sperm fuse with egg & polar nuclei. :contentReference[oaicite:2]{index=2}
  • Endosperm: nutritive tissue formed after triple fusion.

Detailed Notes

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