division spermatophyta
Học thuậtThân thiện
Definition
- Noun:
- A taxonomic division of seed-bearing plants: "Division Spermatophyta" is a formal botanical classification term referring to the group of plants that reproduce via seeds. This division historically encompassed all seed plants, including both flowering plants (angiosperms) and non-flowering seed plants like conifers (gymnosperms).
Usage
- Noun:
- In older classification systems, the Division Spermatophyta included both pine trees and rose bushes.
- The fossil record provides evidence for the evolution of the Division Spermatophyta.
Advanced Usage
- In taxonomic hierarchy: The term is used in the context of biological classification (taxonomy). It represents a high-level rank (Division) grouping organisms with shared fundamental characteristics.
- The kingdom Plantae was once divided into major groups such as the Division Spermatophyta and the Division Pteridophyta.
Variants and Related Words
- Spermatophyte (n): An individual plant belonging to the seed plants; a member of the Spermatophyta.
- A spruce tree is a spermatophyte.
- Spermatophytic (adj): Of or relating to seed plants.
- The study focused on spermatophytic evolution.
Synonyms
- Seed plants: A common, non-technical term for plants that produce seeds.
- Phanerogams: An older, synonymous botanical term for seed plants.
Notes on Classification
- Modern Context: In contemporary botanical science, the term "Spermatophyta" is less commonly used as a formal division. Modern phylogenetic systems often recognize seed plants as a clade (a group with a common ancestor) and classify angiosperms and gymnosperms as separate, equivalent groups (e.g., Phylum Anthophyta and Phylum Coniferophyta, respectively). Thus, "Division Spermatophyta" primarily appears in historical or educational contexts discussing traditional plant classification.
Noun
- seed plants; comprises the Angiospermae (or Magnoliophyta) and Gymnospermae (or Gymnospermophyta); in some classification systems Spermatophyta is coordinate with Pteridophyta (spore producing plants having vascular tissue and roots) and Bryophyta (spore producing plants lacking vascular tissue and roots)