Explain the difference between self-pollination and cross-pollination

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Solution

Self-fertilization
Cross-fertilization
1. Transfer of pollen grains from the anther to the stigma of the same flower.
1. Transfer of pollen grains from the anther to stigma of another flower in the same or different plant.
2. Occurs in bisexual flowers having anther and stigma maturing at same time.
2. Occurs in unisexual flowers or bisexual having anther and stigma maturing at different times.
3. External medium is not required for pollination.
3. External medium is required for pollination.
4. Examples- wheat, peas etc.
Examples- lady finger, tomato, brinjal etc.

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Self-fertilization	Cross-fertilization
1. Transfer of pollen grains from the anther to the stigma of the same flower.	1. Transfer of pollen grains from the anther to stigma of another flower in the same or different plant.
2. Occurs in bisexual flowers having anther and stigma maturing at same time.	2. Occurs in unisexual flowers or bisexual having anther and stigma maturing at different times.
3. External medium is not required for pollination.	3. External medium is required for pollination.
4. Examples- wheat, peas etc.	Examples- lady finger, tomato, brinjal etc.