The stems of all plants-whether they reproduce asexually or sexually-are vertical; there is no such thing as a horizontal stem.

Name: The stems of all plants-whether they reproduce asexually or sexually-are vertical; there is no such thing as a horizontal stem.
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Question

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There are some plants, such as strawberries and some ferns, that have horizontal stems called stolons or runners, which grow along the surface of the soil and produce new plantlets.

The Stems of All Plants-Whether They Reproduce Asexually or Sexually-Are