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Episode 135 - Seeds

The Common Descent Podcast

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The Evolution of Seed Plants

The only way you can get a seed is via pollination. Sperms use what's called double fertilization. The pollen grain has basically two sperm in it. So the pollen lands on the stigma, which triggers a pollen tube, which grows down into the plant ovary. One part of fertilization is making the baby plant food.

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