The earliest vascular plants on land had underground stems (rhizomes)but no roots. Water and mineral nutrients were most likely obtained by

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Mycorrhizae are symbiotic associations between plant roots and fungi, in which the fungi help the plant absorb water and nutrients from the soil. It is likely that early vascular plants obtained their water and minerals in this way since they did not yet have true roots.

Answer: E 
 Diffusion across the cuticle of the rhizome could also be a possible method of obtaining water and minerals for early vascular plants, as the cuticle is a layer that covers the surface of the plant and protects it from water loss. However, this method may not be as efficient as mycorrhizae.

The Earliest Vascular Plants on Land Had Underground Stems (Rhizomes)but