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NIOS Class 12 Biology — Revision Notes

NIOS Class 12 Biology revision notes, chapter by chapter across 8 chapters. Follows the NIOS syllabus. Starts with The Kingdoms Monera, Protoctista.

How to Revise Effectively

  • Active recall: cover the notes, try to recall the key points, then check.
  • Spaced repetition: revise each chapter again after a day, then after a few days, then after a week or two.
  • Write, don't just read: writing key points and formulas out by hand helps them stick.
  • Teach someone: explaining an idea to a friend is a good test of whether you understand it.

Chapter-Wise Revision Notes — 8 Chapters

1

The Kingdoms Monera, Protoctista And Fungi

4 topics
  • 2.1 Kingdom Monera - Prokaryotic Organisms
  • 2.2 Kingdom Protoctista - Unicellular Eukaryotes
  • 2.3 Kingdom Fungi - Heterotrophic Eukaryotes
  • Comparative Analysis and Classification
Kingdom Monera includes all bacteriaA bacterial cell consistsBacteria exhibit four nutritional categoriesBacteria reproduce asexually through binary fissionCyanobacteria (formerly called blue
Read the The Kingdoms Monera, Protoctista And Fungi notes
2

Kingdoms Plantae And Animalia

4 topics
  • 3.1 Kingdom Plantae - Overview and Main Divisions
  • 3.2 Bryophyta - The Amphibians of Plant Kingdom
  • 3.3 Pteridophyta - True Vascular Plants Without Seeds
  • 3.4 Spermatophyta - Seed-Producing Plants
Kingdom Plantae consists of multicellularBryophytes are the simplest embryophytes lackingPteridophytes (ferns) are the first plantsSpermatophytes represent the highest divisionAngiosperms are classified into two major
Read the Kingdoms Plantae And Animalia notes
4

Tissues And Other Levels Of Organization

4 topics
  • 1. Definition and Basic Concepts of Tissues
  • 2. Plant Tissues - Classification
  • 3. Meristematic Tissues
  • 4. Simple Permanent Plant Tissues
A tissue is a groupMeristematic tissues consist of immatureSimple permanent tissues are composedComplex tissues contain multiple cell typesThis theory explains vegetative shoot apex
Read the Tissues And Other Levels Of Organization notes

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Frequently Asked Questions

Where can I find NIOS Class 12 Biology Revision Notes?

This page has revision notes for 8 chapters of NIOS Class 12 Biology for the board exams 2027. Each chapter links to its own page with the full set.

Go through the syllabus first, then work chapter by chapter: learn the ideas, practise questions, and revise with notes and flashcards. Leave time at the end to revise every chapter once more under timed conditions.

Browse Revision Notes by Chapter

8 chapters

1

The Kingdoms Monera, Protoctista And Fungi

2

Kingdoms Plantae And Animalia

4

Tissues And Other Levels Of Organization

5

Root System

6

Shoot System

7

Absorption, Transport And Water Loss In Plants

8

Nutrition In Plants – Mineral Nutrition

9

Nitrogen Metabolism

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NIOS Class 12

Practice Quiz

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Important Questions

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Chapter Summary

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Concept Maps

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Flashcards

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Syllabus

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