Which of these characteristics distinguishes angiosperms from other seed plants? roots Which of these characteristics distinguishes angiosperms from other seed plants?flowersseedstracheids roots Solution 1. Only angiosperms bear true fruit and have flowers. 2.sporophyte and gametophyte generations, swimming sperm and desiccation tolerance 3. monocots (ie cereals) 4. mechanical support (in form of stem and root anchored to the soil) 5. the diploid gametophyte 6. Pollen grains contain the male gametes of gymnosperms, and seeds contain the female gametes called ovules..