When strawberries start to germinate their seeds

Then how come I plant the strawberry seed when I plant strawberries in my garden?

Strawberries reproduce by both seeds and asexually. Your naivete amazes me and your teacher should be smacked. All annual commercial crops reproduce by either seeds or seeds and asexually, such as garlic, potatos, jerusalem artichokes and many more. That's right, potatos produce seeds that will grow new potato plants. It's by the seeds that we get new varieties. But the seeds might not grow to the plant you want to eat, as most food crops are usually hybrids and won't produce in like or the seeds might become tainted from a cousin species and make unappealing hybrids. If you're planting strawberry seeds for strawberry plants, it sounds like your growing wild or alpine strawberries, they're both a heirloom varietiy that will produce in like. But they will also reproduce asexually, along with seeds like all annual commercial crops.

the more you know,thanks for the info!