biological classification neet notes
biological classification class 11 ncert summary
five kingdom classification neet
monera protista fungi plantae animalia notes
biological classification chart
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ðŠī Blog Structure
ðŋ 1. Introduction
Hello NEET Aspirants ð
In this post, we will decode Biological Classification — one of the most concept-rich chapters of Class 11 Biology.
Let’s understand how scientists divided the vast living world into systematic groups, simplifying life’s diversity into clear categories.
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𧎠2. History of Classification
Aristotle (First attempt): Classified animals based on habitat (air, land, water).
Linnaeus (2 Kingdoms): Plantae and Animalia.
Whittaker (1969): 5 Kingdoms — Monera, Protista, Fungi, Plantae, Animalia.
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ð 3. Whittaker’s Five Kingdom Classification
Kingdom Cell Type Cell Wall Nutrition Example
uMonera Prokaryotic Yes (peptidoglycan) Autotrophic & heterotrophic Bacteria
Protista Eukaryotic Variable Autotrophic/heterotrophic Amoeba, Paramecium
Fungi Eukaryotic Chitin Heterotrophic (saprophytic) Yeast, Mushroom
Plantae Eukaryotic Cellulose Autotrophic Moss, Fern, Mango
Animalia Eukaryotic No Heterotrophic Human, Dog, Lion
ð§ Mnemonic: M-P-F-P-A → Many People Find Plants Amazing ðŋ
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ðĶ 4. Kingdom Monera
Prokaryotic, unicellular, cell wall → peptidoglycan.
Examples: Bacteria, Cyanobacteria (Blue-green algae).
Reproduction: Binary fission.
Special Feature: Some fix nitrogen (e.g., Anabaena).
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ð 5. Kingdom Protista
Unicellular eukaryotes.
Examples: Amoeba, Paramecium, Euglena.
Locomotion: Flagella, cilia, or pseudopodia.
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ð 6. Kingdom Fungi
Heterotrophic → Saprophytic or parasitic.
Cell wall: Chitin.
Examples: Yeast, Rhizopus, Agaricus.
Reproduction: Asexual (spores) + sexual.
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ðģ 7. Kingdom Plantae & Animalia
Plantae: Photosynthetic, multicellular.
Animalia: No cell wall, complex organ systems.
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ð 8. PYQs
Q1. Who proposed the Five Kingdom Classification?
✅ R.H. Whittaker (1969)
Q2. What type of nutrition is found in fungi?
✅ Saprophytic or parasitic.
Q3. Which kingdom includes bacteria?
✅ Monera.
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ð 9. Quick Summary
Classification evolved from 2 → 5 kingdoms.
Whittaker’s system is based on cell structure, organization, nutrition, and reproduction.
Monera = prokaryotes; Protista = unicellular eukaryotes; Fungi = chitin walls.
