Sexual Reproduction in Flowering Plants Class 12 Notes Biology Chapter 2 - CBSE
What are Sexual Reproduction In Flowering Plants?
It is the reproductive organ of plants. It consists of 4 whorls:
Androecium (Male Reproductive Part)
A typical microsporangium is surrounded by 4 walls
Pollen grains/male gametophyte - spherical in shape and made up of 2 layers+ 1 Germ Pore+ 2 Cells
Gynoecium:(Female Reproductive Part Of Flower)
The transfer of pollen grains from anther to stigma of a pistil is called pollination.
Based on the Source of Pollen, Pollination is of 3 types
Agents Of Pollination
Ways to avoid Self-pollination
Steps Of Pollen: Pistil Interaction
Recognition of compatible pollen→ Germination of pollen →grains Development of Male Gametophyte
Major Post- Fertilization Events
Two Types of Endosperm Development
Zygote → A Proembryo → A Mature embryo (heart-shaped)
It consists of: Embryonal Axis, Cotyledons, Plumule and Radicle.
Fertilized and mature ovule develops into seed.