Cross Pollination vs. Self Pollination

Cross Pollination:
- Cross pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different plant.
- It involves the transfer of pollen between two different plants, which can be of the same species or different species.
- This process allows for genetic diversity in offspring, as it combines the genetic material of two different plants.
- Cross pollination is often carried out by pollinators such as bees, butterflies, and birds, which inadvertently transfer pollen as they visit different flowers.
- Examples of cross-pollinated plants include corn, apples, and cherries.

Self Pollination:
- Self pollination is the transfer of pollen from the anther of a flower to the stigma of the same flower or another flower on the same plant.
- It involves the transfer of pollen within the same plant, leading to limited genetic diversity in offspring.
- Self pollination can occur through various mechanisms such as wind, gravity, or self-pollinating plants that have both male and female reproductive organs.
- This process ensures reproductive success in plants that may not have access to pollinators or when environmental conditions are not conducive to cross pollination.
- Examples of self-pollinated plants include peas, tomatoes, and wheat.

Key Differences:
- Cross pollination involves the transfer of pollen between different plants, while self pollination involves the transfer of pollen within the same plant.
- Cross pollination leads to genetic diversity in offspring, while self pollination results in limited genetic diversity.
- Cross pollination is often carried out by pollinators, whereas self pollination can occur through various mechanisms or self-pollinating plants.