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mid Silurian – present
The vascular plants are set apart in two main ways:
- Vascular plants have vascular tissues, which circulate resources through the plant. This feature allows vascular plants to grow to a larger size than non-vascular plants, which lack these specialized conducting tissues and are therefore restricted to relatively small sizes.
- In vascular plants, the principal generation phase is the sporophyte, which is diploid with two sets of chromosomes per cell.
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- Spore-bearing vascular plants
- Seed-bearing vascular plants - Superdivision Spermatophyta