PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoWhat is sexual reproduction?
The process in which a male and a female gamete fuse to produce offspring of their own kind is known as sexual reproduction.
Sexual reproduction
In this type of reproduction, both sexes, male and female sex organs, are needed to produce gametes.
The sexual reproduction of plants can be categorized into three different stages such as,
- Pre-fertilization events
- Fertilization
- Post-fertilization events
1. Pre-fertilization events:
These include
- The reproductive organs of a flower
- Gametogenesis
- Pollination
In our previous grade we have already learnt that the reproductive organ of angiosperms (flowering plants) is flower.
Parts of a Typical Flower:
A modified shoot with limited growth to carry out sexual reproduction is known as a flower.
A typical flower consists of four whorls borne on a thalamus.
Parts of a flower
The four whorls from outside are a follows:
- Calyx: Consisting of sepals
- Corolla: Consisting of petals
- Androecium: Consisting of stamens
- Gynoecium or pistil: Consisting of carpels
Reference:
https://commons.wikimedia.org/wiki/File:Sexual_cycle.svg
https://commons.wikimedia.org/wiki/File:Figure_26_03_02.jpg
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