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Many vascular plants do not have flowers. Ferns are an example. I think all flowering plants are vascular, but if any are not, they evolved from vascular plants. I know that some species of duckweed have no roots or stems, and though I can imagine evolution of a flower that is entirely without conductive tissue when it is floating on water and as small as some duckweed flowers, I doubt it ever happened.

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How are gymnosperms and angiosperms different?

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Does the rose plant produces seeds by flowers or cones?

By cones. You should do your own research instead of coming to answers.com. Thank you. Have a great day.


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