They're living things so how do they reproduce on their own.
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It depends on the tree.
Most reproduce sexually. Pollen contains sperm and can be transferred by insect or wind (most commonly) to another tree. Seeds are fertilized and the seeds grow into new trees. This is true of trees such as pine, apple, coconut, and many others. Cones, flowers, fruit, seeds, nuts, and pollen are all part of sexual reproduction.
Some trees will multiply asexually. Aspen trees will send up runners from their roots which can grow into a whole separate tree. Because they aren't sharing genetic material with another tree, this is asexual.
Many trees have both male (pollen-bearing) and female (fruit/nut bearing) parts in the same tree, but some, such as the ginkgo tree, are only one gender, though sometimes it can switch.
Most reproduce sexually. Pollen contains sperm and can be transferred by insect or wind (most commonly) to another tree. Seeds are fertilized and the seeds grow into new trees. This is true of trees such as pine, apple, coconut, and many others. Cones, flowers, fruit, seeds, nuts, and pollen are all part of sexual reproduction.
Some trees will multiply asexually. Aspen trees will send up runners from their roots which can grow into a whole separate tree. Because they aren't sharing genetic material with another tree, this is asexual.
Many trees have both male (pollen-bearing) and female (fruit/nut bearing) parts in the same tree, but some, such as the ginkgo tree, are only one gender, though sometimes it can switch.
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well many trees bear blossoms and later fruit. The blossoms are the sexual organs and they are pollinated by bees and other insects. When the blossoms are fertilised then the fruit grows bearing the seeds. I dont know a great deal about trees but it is possible that some of them are hermaphroditic meaning they are able to pollinate themselves or bypass this step entirely . It is interesting to note however that without bees, many trees species would become extinct.
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Asexual reproduction