Does the angiosperm species outnumber all the other land plant species by about 7 to 1?

Yes, angiOSperms, or flowering plants, significantly outnumber other land plant species, with estimates suggesting they account for about 80% of all plant species. This means that for every non-angiOSperm species, there are approximately seven angiOSperm species. This dominance is attributed to their diverse adaptations and reproductive strategies, which allow them to thrive in various environments.