Self-Pollination versus Cross-Pollination
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Self-pollination deposits pollen on the same flower or plant's stigma; cross-pollination deposits it on a different plant, producing greater genetic diversity in offspring.
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A pea flower with stamen and carpel close together can self-pollinate without an outside pollinating agent.
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Self-pollination is not a lesser form of reproduction — it remains sexual reproduction, involving meiosis and fertilization.