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The Kingdoms Monera, Protoctista And Fungi

NIOS · Class 12 · Biology

Quick revision notes for The Kingdoms Monera, Protoctista And Fungi — NIOS Class 12 Biology. Key concepts, formulas, and definitions for last-minute revision.

45 questions24 flashcards5 concepts

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A step-by-step flowchart illustrating the process of binary fission in bacteria, showing the replication of DNA and subsequent division of the cell into two daughter cells.
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Key Topics to Revise

1

2.1 Kingdom Monera - Prokaryotic Organisms

  • Monera is the ONLY prokaryotic kingdom - lacks true nucleus and membrane-bound organelles
  • Includes bacteria, archaebacteria, eubacteria, and cyanobacteria
  • Unicellular or filamentous (some actinomycetes are multicellular)
2

2.2 Kingdom Protoctista - Unicellular Eukaryotes

  • Protoctists are unicellular eukaryotes with membrane-bound organelles (nucleus, mitochondria, ER, Golgi, chloroplasts in photosynthetic forms)
  • Includes protozoa, diatoms, and unicellular algae
  • Possess nuclear membrane enclosing chromosomes - fundamentally different from Monera
3

2.3 Kingdom Fungi - Heterotrophic Eukaryotes

  • Fungi are eukaryotic heterotrophs - cannot produce own food, absorb organic matter
  • Body composed of slender filaments called hyphae (unicellular or multicellular with nuclei)
  • Cell walls made of chitin (NOT cellulose like plants)
4

Comparative Analysis and Classification

  • MONERA vs PROTOCTISTA: Monera = prokaryotic (no nucleus), Protoctista = eukaryotic (true nucleus)
  • MONERA vs PROTOCTISTA: Monera = 70S ribosomes, Protoctista = 80S ribosomes
  • MONERA vs PROTOCTISTA: Monera = no organelles, Protoctista = membrane-bound organelles (mitochondria, ER, Golgi, chloroplasts)

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Full Notes

Key Concepts

Kingdom Monera includes all bacteriaA bacterial cell consistsBacteria exhibit four nutritional categoriesBacteria reproduce asexually through binary fissionCyanobacteria (formerly called blue

Frequently Asked Questions

What are the important topics in The Kingdoms Monera, Protoctista And Fungi for NIOS Class 12 Biology?
Key topics in The Kingdoms Monera, Protoctista And Fungi include Overview of Three Kingdoms: Classification and Key Characteristics, Mind map showing the key characteristics, composition, and features of Kingdom Monera, Flowchart showing the hierarchical organization of bacterial cell structures. These are the concepts NIOS Class 12 examiners draw on most — study them first, then practise related questions.
How to score full marks in The Kingdoms Monera, Protoctista And Fungi — NIOS Class 12 Biology?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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