Biology · Plant Kingdom · NEET
The plant kingdom is Kingdom Plantae, one of the five kingdoms in Whittaker's 1969 classification (the other four are Monera, Protista, Fungi and Animalia). In this chapter, Plantae is studied in detail and is divided into five main groups: Algae, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms. This matters for NEET because almost every question in the Plant Kingdom chapter is about one of these five groups.
Plantae includes: 1) Algae (simple, mostly aquatic plants), 2) Bryophytes (mosses and liverworts, the 'amphibians of the plant kingdom'), 3) Pteridophytes (first plants with vascular tissue, like ferns), 4) Gymnosperms (naked-seed plants like Pinus), and 5) Angiosperms (flowering plants with enclosed seeds). Remember them in this order because it also shows evolution from simple to complex.
No. Fungi is now a separate kingdom in the five kingdom system. Earlier classifications put fungi inside Plantae, but NCERT clearly states fungi have been excluded from Plantae. NEET often tests this — if a question calls fungi a 'plant', it is wrong.
No. Blue-green algae are cyanobacteria, and cyanobacteria belong to Kingdom Monera (they are prokaryotes with no true nucleus). NCERT says clearly: 'the cyanobacteria that are also referred to as blue green algae are not algae any more.' So even though the name has 'algae' in it, they are NOT in Plantae. This is a very common NEET trap.
Our understanding of Plantae changed. Fungi and the cell-wall-having members of Monera and Protista were removed because they differ in basic cell features (like being prokaryotic, or having a different mode of nutrition). So today Plantae is a cleaner, more natural group of true plants. NEET may ask what is 'excluded' from Plantae — the answer is fungi and cyanobacteria.
Yes. The order Algae → Bryophytes → Pteridophytes → Gymnosperms → Angiosperms roughly shows evolution from simple aquatic forms to complex land plants with flowers and seeds. Later groups are better adapted to land: vascular tissue appears in pteridophytes, seeds appear in gymnosperms, and flowers plus enclosed seeds appear in angiosperms.
Try the real previous-year questions from this chapter — each with the answer and a full solution.
R.H. Whittaker proposed the Five Kingdom classification in 1969. The five kingdoms are Monera, Protista, Fungi, Animalia and Plantae.
Five groups: Algae, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms.
No. Protista is a separate kingdom. Members of Protista and Monera that have cell walls were excluded from Plantae, so they are not part of the plant kingdom.
Algae are the simplest members of Plantae. They are mostly aquatic and lack true roots, stems and leaves.
Angiosperms (flowering plants) are the most advanced. They have flowers, and their seeds are enclosed inside fruits.
