Five Kingdom Classification

• Whittaker (1969) — Monera, Protista, Fungi, Plantae, Animalia.
• Monera — prokaryotes (bacteria, cyanobacteria); unicellular.
• Protista — eukaryotic unicellular (Amoeba, Euglena, Paramecium).
• Fungi — heterotrophic decomposers; chitin cell wall (yeast, mushroom).
• Plantae — autotrophs; cell wall cellulose.
• Animalia — heterotrophs; no cell wall; eukaryotic multicellular (mostly).

1. Monera — no nucleus; often photosynthetic (cyanobacteria) or decomposer.
2. Protista — aquatic; plant-like (Euglena), animal-like (Amoeba), fungus-like (slime moulds).
3. Fungi — saprophytic; body = hyphae; reproduce by spores.
4. Plantae — thallophyta, bryophyta, pteridophyta, gymnosperms, angiosperms (subgroups in NCERT).
5. Animalia — porifera to mammalia (phyla in NCERT table).
6. Diagram (text) — decision tree: prokaryote? → Monera; else eukaryote → further splits.
7. NCERT Ch. 7 — compare cell wall, nutrition mode across kingdoms.
8. Real world — antibiotics from fungi; nitrogen-fixing bacteria (Monera).

Classifying Amoeba, Mushroom, Spirogyra, and Eagle

Amoeba → **Protista** (unicellular eukaryote, animal-like)
Mushroom → **Fungi** (heterotroph, chitin wall, spores)
Spirogyra → **Plantae** (multicellular algae, autotroph, cellulose wall)
Eagle → **Animalia** (multicellular, heterotroph, no cell wall)
Conclusion: use cell type, body organisation, and nutrition mode.

• Placing fungi in Plantae (fungi are separate kingdom — no chlorophyll).
• Misconception: all bacteria are harmful (many beneficial — curd, nitrogen fixers).
• Confusing Protista with Monera (Protista = eukaryotic).
• Thinking viruses belong to a kingdom (acellular — not in five kingdoms).
• Forgetting cyanobacteria are Monera but photosynthetic.

• Name the five kingdoms.
• Two differences between Plantae and Animalia.
• Which kingdom do bacteria belong to?
• Give one example each from Protista and Fungi.

Open the Practice tab for graded questions on Five Kingdom Classification.