Answer: Plants can grow without producing seeds. There are two general ways for plants to reproduce. One is called sexual reproduction where flowers grow, are pollinated and then produce seeds. The second way is called asexual or vegetative reproduction where plants develop offshoots, suckers from the roots, or simply allow one of its branches to trail along the ground and develop roots wherever it touches the ground. You might want to show that a strawberry plant can reproduce by sending out aboveground stems. When these stems get long enough they touch the ground and develop new little plants. Of course you could also plant the seeds that develop on the strawberries, but once you have a mature strawberry plant you would never have to plant another strawberry plant or seed. The parent plant will just continue to send out new stems and make new little plants and as they mature, the little plants will also send out stems to make new little plants.
Or, a pineapple plant will develop offsets or pups at the base of the plant when it is mature. These pups can be removed from the parent plant and planted in the ground. They will grow into new plants. Hope this gives you a few ideas for your science project!
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