Key Points
Key Points: Kingdom Plantae
1. Meaning- All eukaryotic, chlorophyll-containing organisms; cell wall made of cellulose; mostly autotrophic; some are insectivorous (e.g. Venus fly trap, Bladderwort) or parasitic (e.g. Cuscuta).
2. Members - Includes algae, bryophytes, pteridophytes, gymnosperms and angiosperms.
3. Alternation of generations - Life cycle has two phases - diploid sporophyte and haploid gametophyte - which alternate with each other.
4. Plant groups at a glance:
- Algae - Simple, aquatic, no true roots/stems/leaves. e.g. Seaweed, Green algae
- Bryophytes - Non-vascular, moist environments. e.g. Mosses, Liverworts
- Pteridophytes - Vascular, no seeds, reproduce by spores. e.g. Ferns
- Gymnosperms - Naked seeds in cones, no flowers/fruits. e.g. Pine, Fir
- Angiosperms - Seeds enclosed in fruits, the most diverse group. e.g. Rose, Lily
5. Key features - Have prominent chloroplasts for photosynthesis; membrane-bound organelles; the most diverse group among all kingdoms.
