noun, plural: angiosperms
(botany) A flowering, fruit-bearing plant or tree known for having ovules (and therefore seeds) develop within an enclosed ovary
Angiosperms are plants producing flowers. Thus, they are also commonly called as the flowering plants. They belong to the Kingdom Plantae, Subkingdom Embryophyta. The distinctive features of Angiosperms are as follows:
- The reproductive organs in flowers of these plants enable them to utilize a more species-specific breeding system
- They have stamens that bear pollen. This feature enables certain Angiosperms to prevent self-fertilization while increasing the odds of fertilizing another flower of the same or of different plant. This helps increase genetic variability.
- They have smaller male and female gametophytes in comparison to those of other seed-bearing plants, i.e. gymnosperms
- They have closed carpel enclosing the ovules. The carpel(s) and other accessory parts may develop into a fruit, which is an important plant organ for seed dispersal.
- They form endosperm, which is a nutritive tissue for the developing embryo or for the seedling.
The angiosperms make up the division Magnoliophyta and may be grouped into two major plant groups: Dicotyledoneae (or Magnoliopsida) and Monocotyledonae (or Liliopsida). The Dicotyledonae is comprised of the dicotyledons and eudicotyledons whereas the Monocotyledonae consists of the monocotyledons.
Word origin: Ancient Greek angeîon (receptacle) + spérma (seed)
- Kingdom: Plantae
- Subkingdom: Embryophyta
- Division: Magnoliophyta or Angiospermae