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title: "Biological Classification"
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# Biological Classification
Since the dawn of civilization, there have been many attempts to classify living organisms. This chapter discusses the evolution of classification systems, with a focus on R.H. Whittaker's five-kingdom classification, which includes Monera, Protista, and Fungi, and sets the stage for further exploration of Plantae and Animalia in subsequent chapters.

## Knowledge Snapshot
| Field | Details |
| :--- | :--- |
| Board | CBSE |
| Curriculum | CBSE |
| Class | Class 11 |
| Subject | Biology |
| Book | Biology |
| Chapter | Biological Classification |
| Chapter Number In Book | 2 |
| Chapter Slug | biological-classification |
| Pages | 10-22 |
| Page Count | 13 |
| Source PDF | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/9fa35723-6294-4d1b-9ba5-c93b6bafdd62.pdf |
| Last Updated | 2026-06-25 |

## Chapter Overview
This chapter covers the historical attempts at biological classification and the inadequacies of early systems, leading to the adoption of the five-kingdom system proposed by Whittaker, focusing on the characteristics of the kingdoms Monera, Protista, and Fungi.

## Topic Inventory
| No. | Topic ID | Topic |
| :--- | :--- | :--- |
| 1 | 69abcdaba243cecf96857626 | Kingdom Monera |
| 2 | 69abcdaba243cecf96857628 | Kingdom Protista |
| 3 | 69abcdaba243cecf9685762a | Kingdom Fungi |
| 4 | 69abcdaba243cecf9685762c | Kingdom Plantae |
| 5 | 69abcdaba243cecf9685762e | Kingdom Animalia |
| 6 | 69abcdaba243cecf96857630 | Viruses, Viroids, Prions and Lichens |

## Topic-Wise Extracted Content
### Kingdom Monera
This section will cover characteristics of Kingdom Monera according to Whittaker's classification.

### Kingdom Protista
This section will cover characteristics of Kingdom Protista according to Whittaker's classification.

### Kingdom Fungi
This section will cover characteristics of Kingdom Fungi according to Whittaker's classification.

### Kingdom Plantae
This section will cover the characteristics of Kingdom Plantae, but details will be provided in chapters 3 and 4.

### Kingdom Animalia
This section will cover the characteristics of Kingdom Animalia, but details will be provided in chapters 3 and 4.

### Viruses, Viroids, Prions and Lichens
This section will discuss Viruses, Viroids, Prions, and Lichens, but further details may be explored in higher classes.

## Chapter Summary
The chapter provides insight into the historical progression of biological classification, emphasizing the necessity for systems that reflect both morphological and phylogenetic relationships, and presents a foundational understanding of the five-kingdom classification.

## Key Ideas
- Classification systems for living organisms have evolved over time due to inadequacies in earlier systems.
- R.H. Whittaker's five-kingdom classification reflects criteria including cell structure, body organization, and modes of nutrition.
- The chapter focuses on Kingdoms Monera, Protista, and Fungi, with further exploration of Plantae and Animalia in subsequent chapters.

## Important Chapter Facts
- The chapter is Biological Classification.
- The chapter number in the book is 2.
- The subject is Biology.
- The book is Biology.
- The class is Class 11.
- The source PDF is https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/9fa35723-6294-4d1b-9ba5-c93b6bafdd62.pdf.
- The chapter covers pages 10-22.
- The chapter page count is 13.
- The topic list contains the supplied topic entries.

## Related OKF Entities
| Entity Type | Title | URL |
| :--- | :--- | :--- |
| Chapter Canonical Page | Biological Classification | https://www.edzy.ai/cbse-class-11-biology-biological-classification |
| Chapter Markdown | Biological Classification | https://www.edzy.ai/okf/chapter/cbse-class-11-biology-biological-classification.md |
| Source PDF | Biological Classification | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/9fa35723-6294-4d1b-9ba5-c93b6bafdd62.pdf |

## Source Attribution
| Field | Value |
| :--- | :--- |
| Source | Edzy |
| Reference Type | examSubjectBookChapter |
| Reference ID | 66f145500821118bf5c5e2df |
| Chapter ID | 66f145500821118bf5c5e2df |
| Canonical URL | https://www.edzy.ai/cbse-class-11-biology-biological-classification |
| Markdown URL | https://www.edzy.ai/okf/chapter/cbse-class-11-biology-biological-classification.md |
| Source PDF | https://edzy-ai.s3.ap-south-1.amazonaws.com/edzy-express-ts/9fa35723-6294-4d1b-9ba5-c93b6bafdd62.pdf |
| Last Updated | 2026-06-25 |