Spermatophyta
E49834
Spermatophyta is the group of vascular plants that reproduce by seeds, encompassing all modern gymnosperms and angiosperms.
Observed surface forms (1)
| Surface form | As subject | As object |
|---|---|---|
| Gymnospermae | 0 | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
clade
→
group of vascular plants → taxon → |
| characterizedBy |
heterospory
→
presence of ovules → presence of pollen → presence of vascular tissue → production of seeds → |
| contrastsWith | spore-only reproduction in seedless vascular plants → |
| dispersalUnit | seed → |
| distinguishedFrom |
Polypodiophyta
→
surface form:
Pteridophyta
bryophytes → |
| divisionOf | Tracheophyta → |
| ecologicalRole | dominant primary producers in most terrestrial ecosystems → |
| evolved | from progymnosperm ancestors → |
| firstAppearance | late Devonian period → |
| hasCommonName | seed plants → |
| hasEconomicImportance |
ornamental plants
→
source of fiber crops → source of food crops → source of medicinal plants → source of timber → |
| hasLifeCycle |
dominant sporophyte generation
→
reduced gametophyte generation → |
| hasTrait |
complex root systems
→
lignified xylem → phloem with sieve elements → secondary growth common in many lineages → true leaves → |
| includes |
Magnoliophyta
→
surface form:
Angiospermae
Ginkgoales → Gnetophyta → Gymnospermae → angiosperms → conifers → cycads → flowering plants → gymnosperms → |
| includesMost | modern terrestrial plant biomass → |
| kingdom | Plantae → |
| partOf | Embryophyta → |
| pollinationMode |
animal pollination in many species
→
wind pollination in many species → |
| reproductionType | sexual reproduction → |
| reproductiveStructure |
ovule
→
pollen grain → seed → |
| taxonRank |
subdivision
→
superdivision → |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Gymnospermae